Tag
Measurement
1108 free resources tagged Measurement: tools, labs, worksheets, cheat sheets, and infographics.
Tools
Geometry Area & Perimeter Explorer Geometry Angle Relationships Explorer Geometry Compass & Straightedge Explorer Geometry 3D Shape Calculator Geometry Coordinate Geometry Calculator Geometry Pythagorean Theorem Explorer Geometry Circle Theorems Explorer Geometry Polygon Properties Calculator Statistics Descriptive Statistics Calculator Physics Circuit Calculator Physics Specific Heat & Calorimetry Calculator Geometry Triangle Congruence Explorer Geometry Surface Area Net Builder Chemistry pH, pOH & Acid-Base Calculator Chemistry Molarity & Dilution Calculator Applied Math Unit Converter Chemistry Mole Converter & Gas Stoichiometry Chemistry Nuclear Decay Chain Calculator Chemistry Electronegativity & Bond Polarity Calculator Physics Pressure & Pascal's Law Calculator Earth Science Earthquake Magnitude Calculator Earth Science Spectroscopy & Redshift Explorer Earth Science Galactic Distance & Hubble's Law Applied Math Experimental Data & Uncertainty Analyzer Earth Science Water Quality Analyzer Biology Transpiration Explorer Earth Science Soil Erosion Explorer Earth Science Telescope Optics Explorer Math Telling Time & Elapsed Time Clock Math Coordinate Grid Treasure Hunt Math Rounding & Estimation Explorer Geometry Area Tiles & Perimeter Paths Geometry Volume with Unit Cubes Math Measurement Lab for Kids Math Measurement Conversion for Kids Statistics Picture Graphs, Bar Graphs & Line Plots Builder Geometry Symmetry & Pattern Blocks Studio Geometry Angle Builder with Kid Protractor Earth Science Sun, Shadows & Daylight Explorer Statistics Line Plot & Fraction Data Explorer Geometry Shape Classifier & Quadrilateral Family Tree Geometry Angle Puzzles & Decomposing Angles Math Elapsed Time Adventure Math Unit Fraction Division Stories Math Measurement Story Problems Earth Science Star Brightness & Distance Math Thermometer & Temperature Explorer Math Nonstandard Measurement Playground Applied Math Build-It-from-Pieces Studio Math Compose Shapes Studio Math Balance Scale: Heavier, Lighter, Equal Earth Science Weather Watcher & Clothing Sort Applied Math Build a Better Shade & Shelter Challenge Social Studies Map Skills Explorer Earth Science Great Circle Distance Physics Speed of Light Around Earth Physics How Fast Are You Moving Right Now Earth Science Gravity Around the World Earth Science Earthquake Wave Simulator Earth Science Earth Curvature Calculator Earth Science Time Zone Physics Tool Earth Science Real-Time Satellite Tracker Physics Sound Pitch and Frequency Explorer Earth Science Earthquake Epicenter Triangulation Earth Science Topographic Map & Contour Lines Tool Chemistry Density Tower Lab Chemistry Acids and Bases for Kids Chemistry Conservation of Mass Lab Math Scale Drawing & Map Ratio Tool Statistics Error Propagation Calculator Applied Math Lab Report Builder Earth Science Solar System Scale Explorer Engineering ISO Tolerance & Fits Calculator Social Studies Map Projection & Distortion Explorer Geometry Triangle Centers Explorer Chemistry Significant Figures Calculator Physics Density Calculator
Labs
Chemistry Calorimetry Lab Chemistry Serial Dilution & Standard Curve Lab Physics Pendulum Lab Physics Full Hooke's Law Investigation Lab Physics Full Pendulum Investigation Lab Physics Hooke's Law Lab Physics Young's Modulus & Stress-Strain Lab Chemistry Chromatography Lab Physics Standing Waves Lab Physics Diffraction & Slits Lab Physics Radiation Shielding & Half-Value Layer Lab Chemistry Electrolysis & Metal Plating Lab Physics Circuit Builder Lab Chemistry Stoichiometry Lab Physics Geometric Optics Lab Physics RC/RL Transients Lab Biology Cellular Respiration Lab Earth Science Water Quality & Eutrophication Lab Biology Plant Water Transport Lab Earth Science Air Pollution Lab Earth Science Soil Conservation Lab Earth Science Earth History Lab Biology Gel Electrophoresis Lab Biology Fruit Fly Behavior Lab Statistics Mean, Median & Mode Lab Statistics Line Plot & Fraction Data Lab Computer Science Network Reliability & Fault Tolerance Lab Statistics Experimental Design & A/B Testing Lab Geometry Angle Builder Lab Geometry Angle Relationships Lab Geometry Shape Classifier Lab Geometry Pythagorean Theorem Lab Geometry Polygon Explorer Lab Geometry Congruence & Transformations Lab Geometry Similarity & Triangle Trigonometry Lab Geometry Circle Theorems & Tangency Lab Geometry Geometric Constructions Lab Geometry Coordinate Geometry & Conics Lab Geometry 3D Measurement & Cavalieri Lab Applied Math Measurement & Uncertainty Lab Applied Math Materials Engineering Challenge Lab Applied Math Shade & Shelter Design Lab Physics Hydraulics & Pascal's Law Lab Physics Viscosity & Poiseuille Flow Lab Earth Science Telescope Resolution & Light Gathering Lab Math School Schedule & Elapsed Time Lab Math Recipe Fractions & Mixing Lab Math Measurement Detectives Lab Math Garden Area & Perimeter Lab Physics Magnets & Materials Lab Earth Science Water on Earth & Conservation Lab Math Volume City Builder Lab Math Shape Detective & Angle Hunt Lab Math Coordinate Treasure Maps Lab Earth Science Recycling Route & Community Helper Lab Earth Science Clean Water for Our School Mission Biology Senses, Brain & Response Lab Earth Science Landforms & Map Reading Lab Earth Science Natural Resources & Conservation Lab Math Thermometer & Temperature Lab Math Nonstandard Measurement Lab Earth Science Sun, Shadows & Daylight Lab Math Shape Sorter & Compose Shapes Lab Math Balance Scale Lab Physics Light, Shadows & Materials Lab Physics Magnet Strength Lab Earth Science Shadow Length Lab Biology Plant Growth Variables Lab Earth Science Simple Weather Station Lab Biology Circulatory System Flow Lab Earth Science Soil Layers & Permeability Lab Physics Pressure in Fluids Lab Math Area & Perimeter Design Challenge Math Measurement Conversion Lab Physics Optical Bench Lab Physics Real Astronomy Sky Map Physics Polarization & Malus's Law Lab Earth Science Stellar Parallax & Distance Ladder Lab Physics Build-a-Musical-Instrument Pitch Lab Physics Soundproofing Materials Lab Social Studies Archaeology Stratigraphy Lab Engineering Beam Deflection & Stiffness Lab Engineering PID Control Tuning Lab
Worksheets
Earth Science Weather & Seasons Social Studies Map Skills & Cardinal Directions Math Angles and Triangles Math Math: Area and Perimeter Math Integers and Absolute Value Math Mean Median Mode and Range Math Math: Measuring Length Math Math: Shapes and Attributes Math Math: Telling Time to the Minute Math Trigonometry Right Triangles Math Math: Volume and Surface Area Chemistry Science: Stoichiometry Calculations Chemistry Science: pH Scale and Acids and Bases Math Math: 2D and 3D Shapes Math Surface Area of 3D Figures Math Math: Symmetry and Congruence Math Telling Time: Hour and Half Hour Math Math: The Pythagorean Theorem Math Math: Vectors and Vector Operations Science Science: The Scientific Method Math Circle Theorems and Arc Length Math Law of Sines and Cosines Math Rounding to the Nearest 10 and 100 Math Math: Similar and Congruent Figures Math Word Problems: Rates, Time, and Distance Physics Kinematics: Velocity, Acceleration, and Motion Graphs Chemistry Science: Solution Chemistry: Molarity and Concentration Chemistry Science: The Mole and Avogadros Number Physics Wave Properties: Frequency, Amplitude, and Wavelength Statistics Statistics: Measures of Center and Spread Statistics Statistics: Types of Data and Sampling Methods Astronomy Astronomy: Galaxies and the Universe Astronomy Astronomy: Light Years, Distance, and Scale Math Angle Relationships: Complementary and Supplementary Math Comparing Fractions with Unlike Denominators Math Coordinate Geometry: Distance and Midpoint Math Fractions on a Number Line Math Rates and Unit Rates Chemistry Chemistry: Thermochemistry: Enthalpy and Hess's Law Social Studies Geography: Latitude, Longitude, and Time Zones Physics Physics: Forces and Motion: Speed, Velocity, Acceleration Physics Physics: Properties of Matter: Mass, Volume, Density Math Area and Perimeter of Rectangles Math Area: Counting Square Units Math Math: Circles: Radius, Diameter, Circumference Math Classifying Triangles and Quadrilaterals Math Measuring Length: Inches and Centimeters Math Math: Measuring Length with Non-Standard Units Math Perimeter of Simple Shapes Math Surface Area of Rectangular Prisms Math Telling Time to Five Minutes Math Volume: Counting Cubic Units Math Math: Line Plots and Dot Plots Social Studies Social Studies: Reading a Map: Keys, Compass, Scale CS CS: Representing Data: Pixels, Colors, and Images Math Math: 3D Shapes Sphere Cube Cone and Cylinder Math Capacity: Full, Half-Full, and Empty Math Comparing Length: Longer and Shorter Math Comparing Weight: Heavier and Lighter Math Days of the Week and Months of the Year Math Math: Hot and Cold Reading a Thermometer Math Identifying Coins: Penny, Nickel, Dime, Quarter Math Measuring with Cubes and Blocks Math Reading a Calendar Math Math: Sorting by Color Shape and Size Science Science: Hot and Cold Temperature in Everyday Life Math Capacity: Cups, Pints, Quarts, and Gallons Math Elapsed Time: Hours and Minutes Math Geometry: Faces, Edges, and Vertices of 3D Shapes Math Introduction to Area: Tiling Shapes Math Length: Feet, Inches, and Yards Math Measuring Capacity: Liters and Milliliters Math Measuring Mass: Grams and Kilograms Math Measuring Perimeter with a Ruler Math Quadrilaterals: Squares, Rectangles, Rhombuses, and Trapezoids Math Rounding Numbers to the Nearest Ten Math Types of Angles: Right, Acute, and Obtuse Science Rocks: Sorting by Color, Texture, and Hardness Science Science: Weather Instruments Social Studies Map Skills: Cardinal Directions Health Health: Nutrition MyPlate and Food Groups Math Adding and Subtracting Mixed Numbers Math Geometry: Classifying Polygons Math Multiplying Fractions by Whole Numbers Math Math: Properties of Triangles Angles and Side Lengths Math Math: Word Problems Multi-Step with Fractions and Decimals Earth Science Earth Science: Geologic Time How Old Is the Earth? Health Health: Food Labels Reading What Is in Your Food Math Absolute Value and the Number Line Statistics Statistics: Box-and-Whisker Plots Statistics Statistics: Experimental Design: Control Groups and Confounds Statistics Statistics: Introduction to Statistics: What Is Data? Statistics Statistics: Range and Outliers CS CS: Introduction to CSS: Styling Webpages Chemistry Chemistry: Acids, Bases, and the pH Scale Chemistry Chemistry: Conservation of Mass in Reactions Chemistry Chemistry: Covalent Bonding and Molecular Geometry (VSEPR) Chemistry Chemistry: Solution Chemistry: Molarity and Dilution Physics Physics: Speed, Distance, and Time Calculations Physics Physics: Work and Power: Using Force to Move Objects Earth Science Earth Science: Geologic Time Scale: Eons, Eras, and Periods Earth Science Earth Science: Minerals: Identification and Properties Astronomy Astronomy: The Scale of the Solar System Astronomy Astronomy: Types of Stars: Color, Size, and Temperature Psychology Psychology: Research Methods: Experimental Design and Ethics Music Music: Melody, Pitch, and Musical Notation Music Music: Rhythm, Beat, and Tempo Math FL FAST 2nd Grade Math Practice Test Math FL FAST 2nd Grade Math Practice Test 2 Math FL FAST 2nd Grade Math Practice Test 3 Math FL FAST 3rd Grade Math Practice Test 1 Math Math: FL FAST 3rd Grade Math Practice Test 2 Math Math: FL FAST 3rd Grade Math Practice Test 3 Math FL FAST 4th Grade Math Practice Test 1 Math FL FAST 4th Grade Math Practice Test 2 Math FL FAST 4th Grade Math Practice Test 3 Math Math: FL FAST 5th Grade Math Practice Test 1 Math Math: FL FAST 5th Grade Math Practice Test 2 Math Math: FL FAST 5th Grade Math Practice Test 3 Science Science: Fair Tests What Should Stay the Same Science Science: Making Bar Graphs from Science Data Science Science: Observations vs Inferences Science Science: Reading Science Data Tables Science Science Tools: Ruler, Thermometer, Balance, and Hand Lens Science Science: Materials and Their Properties Science Moon Observation Calendar Science Accuracy vs Precision: Percent Error and Sources of Uncertainty Science Designing a Controlled Experiment Science Science: Dimensional Analysis Across Disciplines Science Engineering Design Process Applied to Science Problems Science Forensic Science Basics: DNA Fingerprints and Chromatography Science Microscope Skills: Magnification and Specimen Preparation Science Scientific Method for High School Investigations Science Science: Scientific Notation and Order of Magnitude Estimation Science Science: SI Units Metric Prefixes and Unit Conversions Science Significant Figures and Rounding in Scientific Measurements Science Science: Writing a Formal Lab Report Science Lab Safety and Common Lab Equipment for Middle School Science Science: Metric System and Measurement Skills Science Science: Variables in Experiments Science Science: Density and Buoyancy Concepts Music Music: Music Theory: Intervals and Chord Inversions Music Music: Time Signatures and Counting Beats Social Studies Social Studies: Reading Topographic Maps and Contour Lines Chemistry Chemistry: Acids and Bases in Everyday Life Chemistry Chemistry: Density Calculations and Lab Practice Chemistry Chemistry: Mixtures vs Solutions: Concentration and Saturation Psychology Psychology: AP Psychology: Statistics and Research in Psychology Psychology Psychology: What Is Psychology? An Introduction for Middle School Science Citizen Science: Contributing to Real Research Science Plant a Seed: Observing Germination Day by Day Math Math: FL FAST 2nd Grade Math Practice Test 2 Math Math: FL FAST 2nd Grade Math Practice Test 3 Math FL FAST 3rd Grade Math Practice Test 1 Math Math: FL FAST 3rd Grade Math Practice Test 2 Math Math: FL FAST 3rd Grade Math Practice Test 3 Math FL FAST 4th Grade Math Practice Test 1 Math FL FAST 4th Grade Math Practice Test 2 Math FL FAST 4th Grade Math Practice Test 3 Math Math: FL FAST 5th Grade Math Practice Test 1 Math Math: FL FAST 5th Grade Math Practice Test 2 Math Math: FL FAST 5th Grade Math Practice Test 3 Math Scale Drawings and Map Distance Math Math: Square Roots and Cube Roots Philosophy Philosophy: Philosophy of Science: What Makes Knowledge Reliable Physics Physics: Hot or Cold: Temperature and Materials Physics Physics: Special Relativity: Time Dilation and Length Contraction Earth Science Earth Science: Mineral Identification with Mohs Hardness Scale Geometry Geometry: Angles Geometry Geometry: Area and Perimeter Geometry Geometry: Circles Geometry Geometry: Triangles Statistics Statistics: Descriptive Statistics Music Music: Music Theory Music Music: Sheet Music Reading CS Computer Science: Internet and Networks Chemistry Chemistry: Stoichiometry Psychology Psychology: Personality Geometry Geometry: Coordinate Geometry Calculus Calculus: Related Rates Art & Design Art & Design: Drawing Engineering Engineering: Engineering Design Process Statistics Statistics: Descriptive Statistics (High School) Geometry Geometry: Area and Perimeter (Middle School) Geometry Geometry: Circles (Middle School) Geometry Geometry: Coordinate Geometry (Middle School) Geometry Geometry: Triangles (High School) Art & Design Art & Design: Drawing (Elementary) Engineering Engineering: Civil and Structural (Middle School) Music Music: Rhythm Fractions and Time Signatures Astronomy Astronomy: Exoplanet Transit Light Curves Astronomy Astronomy: Space Mission Budget and Payload Trade-Offs Computer Science Computer Science: Spreadsheet Formulas to Model Real Problems Chemistry Chemistry: Thermochemical Equations and Calorimeter Data Chemistry Chemistry: Titration Data and Endpoint Analysis SEL SEL: Goal Setting with SMART Goals and Reflection Health Health: Fitness Data: Heart Rate Zones and Recovery Health Health: Nutrition Labels: Added Sugars and Serving Sizes Science Designing a Citizen Science Investigation Science Experimental Error vs Human Mistakes Science Science: Open-Ended CER Writing from Lab Data Science Reading Scientific Figures and Captions Physics Physics: Measurement Uncertainty in Motion Labs Physics Physics: Sound Design: Decibels and Hearing Safety Art & Design Art & Design: Perspective Drawing: One-Point Rooms Engineering Engineering: Manufacturing Tolerances and Quality Control Engineering Engineering: User-Centered Design and Accessibility Earth Science Earth Science: Topographic Profiles and Watershed Boundaries Physical Education Physical Education: Training Plans and Progressive Overload Social Studies Social Studies: Latitude Lines Run Horizontally Practice Social Studies Social Studies: Longitude Lines Run Pole to Pole Practice Social Studies Social Studies: Which Direction Clocks Change for Daylight Saving Time Practice SEL SEL: How to Set a Strong Goal (SMART Goals) Practice Math Circle Circumference and Area Formulas Practice Math Math: First Eight Digits of Pi Practice Math Math: How to Round Numbers Practice Math Metric Prefixes from Kilo Down to Milli Practice Math US Capacity Units: Largest to Smallest with Gallon Man Geometry Geometry: Acute Angle Is Less Than 90 Degrees Practice Geometry Geometry: Complementary Equals 90 and Supplementary Equals 180 Practice Geometry Geometry: Perimeter is the Distance Around the Edge Practice Geometry Geometry: Three Trig Ratios (SOH CAH TOA) Practice Physics Physics: Order of the Visible Spectrum from Longest to Shortest Wavelength (ROY G BIV) Practice Earth Science Earth Science: Mohs Hardness Scale from 1 to 10 Practice
Cheat Sheets
Math Circle Theorems Math Area, Surface Area & Volume Math Coordinate Geometry Math Transformations & Symmetry Math Pythagorean Theorem & Distance Formula Math Ratios, Rates & Proportions Math Vectors & Vector Operations Geometry Circles Geometry Triangles Math 3D Shapes & Nets Math Angles & Angle Relationships Math Circle Properties & Arc Measures Math Compass & Straightedge Constructions Math Coordinate Plane & Distance Formulas Math Geometric Proofs & Two-Column Form Math Lines, Segments & Rays Math Non-Euclidean & Spherical Geometry Math Polygons & Quadrilaterals Math Polyhedra & Platonic Solids Math Right Triangle Trigonometry Math Similarity & Congruence Math Surface Area & Volume Formulas Math Symmetry & Tessellations Math Polygon Angle Sum Formulas Math Quadrilateral Properties Chart Math Special Right Triangles (30-60-90 and 45-45-90) Math Triangle Centers Reference (Centroid, Incenter, Circumcenter, Orthocenter) Math Volume Formulas Quick Card Math Polar Coordinates & Conversion Math 3D Solids & Volume Reference Math Circle Theorems Reference Math Constructions with Compass & Straightedge Math Coordinate Geometry Distance & Midpoint Math Non-Euclidean Geometry Introduction Math Polygons & Interior Angles Reference Math Quadrilaterals Reference Math Similarity & Congruence Reference Math Transformations Translations Rotations Reflections Math Triangle Congruence Proofs Walkthrough Math Lattice Points & Pick's Theorem Math Unit Conversions & Dimensional Analysis Math Rounding & Estimation Strategies Math Area & Perimeter Reference Math Customary & Metric Measurement Conversions Math Elapsed Time & Telling Time Math Acute angle is less than 90 degrees Memory Aid Math Complementary equals 90 and supplementary equals 180 Memory Aid Math Perimeter is the distance around the edge Memory Aid Math Circle circumference and area formulas Memory Aid Math First eight digits of pi Memory Aid Math Metric prefixes from kilo down to milli Memory Aid Math US capacity units largest to smallest (Gallon Man) Memory Aid Math Angles in Polygons Interior and Exterior Worked Examples Math Angles on Parallel Lines Cut by a Transversal Math Area of Triangles Using Sine and Heron's Formula Math Coordinate Proofs Using the Distance and Midpoint Formulas Math Equations of Circles in the Coordinate Plane Math Law of Sines Worked Examples Math Midsegment and Triangle Proportionality Theorems Math Power of a Point Intersecting Chords and Secants Math Sectors and Arc Length of a Circle Math Similar Triangles and Scale Factor Worked Examples Math Surface Area of Cylinders Cones and Spheres Worked Examples Math Tangent Lines and Tangent Length Theorems Math Triangle Inequality and Side Angle Relationships Math Volume of Pyramids Cones and Spheres Worked Examples Math Estimating and Bounds with Significant Figures Math Histograms with Unequal Class Widths and Frequency Density Math Speed Distance Time and Compound Measures Statistics Power Analysis & Sample Size Reference Physics Waves & Sound Physics Introduction to Physics Physics Nuclear Physics & Radioactivity Physics Simple Machines & Mechanical Advantage Physics Pendulum & Spring Period Reference Physics Quantum Mechanics Postulates and Operators Physics Lab Multimeter Operations Reference Physics Mass-Energy Equivalence Worked Examples Physics Oscilloscope Reading Reference Physics Sound Intensity & Decibel Reference Physics Density, Mass & Volume Physics SI Units & Metric Prefixes Physics Significant Figures & Measurement Uncertainty Physics Order of the visible spectrum from longest to shortest wavelength (ROY G BIV) Memory Aid Physics Resistor color codes 0 through 9 Memory Aid Physics Calorimetry Worked Examples Physics Electric Power Bills and Household Energy Reference Physics Error Propagation and Uncertainty Calculations Reference Physics Graph Analysis and Linearization Reference Physics Heisenberg Uncertainty Principle Reference Physics Ideal Gas Law Worked Examples Physics Nuclear Binding Energy and Mass Defect Worked Examples Physics Standing Waves on Strings and in Pipes Worked Examples Physics Vernier Caliper and Micrometer Reading Reference Chemistry Stoichiometry & Molar Mass Chemistry Solutions & Concentration Chemistry Common Lab Equipment & Techniques Chemistry Acid-Base Indicators Color Chart Chemistry General Chemistry Stoichiometry and Solutions Chemistry 2D NMR (COSY, HSQC, HMBC) Reference Chemistry Crystallography & Miller Indices Reference Chemistry Nuclear Decay Chain Reference Chemistry Radiometric Dating Reference Chemistry Titration Procedure & Endpoint Detection Chemistry UV-Vis Spectroscopy Reference Chemistry Density & Specific Gravity Reference Chemistry Empirical vs Molecular Formula Chemistry Limiting Reactant & Percent Yield Chemistry Mole Conversion Roadmap Chemistry Dilution Calculations (M1V1 = M2V2) Chemistry A-Level Required Practical Techniques Summary Chemistry Avogadro's Number and the Mole Concept Worked Examples Chemistry Calorimetry and Heat Capacity Calculations Chemistry Chromatography Techniques Reference (TLC, Paper, Column, GC) Chemistry Gas Stoichiometry at STP and Non-STP Worked Examples Chemistry Gravimetric Analysis Worked Examples Chemistry IB Chemistry Data Booklet Quick Reference Chemistry Percent Composition and Hydrate Formula Worked Examples Chemistry Recrystallization and Purification Techniques Chemistry Titration Calculations Step by Step Chemistry Electrolysis Quantitative Calculations Worked Examples Chemistry Ideal Gas Law Problem Walkthroughs Biology Cell Structure & Function Biology Microscopy & Cell Imaging Techniques Reference Biology GCSE Biology Required Practicals Reference Biology IB Biology Themes and Concepts Reference Computer Science Networking & The Internet Computer Science Memory Hierarchy & Cache Reference Earth Science Plate Tectonics & Earthquakes Earth Science Mineral Identification Guide Earth Science Earthquake Magnitude & Scales Earth Science Mineral Identification Quick Card Earth Science Topographic Map Reading Earth Science Earthquake Waves (P, S, Surface) Earth Science Beaufort Wind Scale Reference Earth Science Gemstone Reference Chart Earth Science Geologic Maps Reading Reference Earth Science Ocean Zones by Depth Reference Earth Science Paleoclimate Proxies Reference Earth Science Sedimentary Rock Classification Reference Earth Science Mineral Properties Reference Earth Science Weather Instruments Reference Earth Science Mohs hardness scale from 1 (softest) to 10 (hardest) Memory Aid Earth Science Latitude, Longitude, and Time Zones Earth Science Porosity and Permeability in Aquifers Earth Science Reading a Topographic Profile from Contour Lines Earth Science Relative Humidity and Dew Point Reference Earth Science Tides and Tidal Patterns Reference Social Studies Map Skills and Geographic Concepts Social Studies Geography Skills Social Studies Geography of the Continents Social Studies Latitude, Longitude & Map Coordinates Social Studies Latitude lines run horizontally Memory Aid Social Studies Longitude lines run pole to pole Memory Aid Social Studies Nine standard elements of a map (TODALSIGS) Memory Aid Social Studies Which direction clocks change for daylight saving time Memory Aid Science Matter Energy and Forces Basics Science Scientific Method and Experimental Design Science How to Answer Science Questions for Young Scientists Science Matter and Materials Basics for Young Scientists Science Observations Inferences and Evidence for Young Scientists Science Reading Science Charts and Graphs for Young Scientists Science Science Tools and Measurement for Young Scientists Science Observations Inferences and Evidence Grade 2 Visual Science Reading Charts and Graphs Grade 2 Visual Science Science Tools and Measurement Grade 2 Visual Science Scientific Method Grade 2 Visual Science Weather and Water Cycle Grade 2 Visual Science ACT Science Reasoning Reference Science Sink or Float for Young Scientists Health Body Systems Structure and Function Health Nutrition Fitness and Personal Wellness Health Sleep, Stress & Recovery Health Macronutrients & Micronutrients Reference Health MyPlate & Balanced Plate Visual Health Body Mass Index & Body Composition Health Hydration & Electrolyte Balance Health Diabetes-Friendly Eating Reference Health Healthy Hydration Reference Health Heart Rate Zones & Cardio Training Reference Health Food Groups & Portion Sizes Health Posture & Ergonomics Health Reading Nutrition Labels Health Screen Time & Digital Wellness Health Caffeine & Energy Drinks Health Hearing Protection & Ear Health Health FITT Principle for Exercise Planning Reference Health Macros and Daily Calorie Needs Reference Astronomy Constellations & Night Sky Navigation Astronomy Astronomical Distances & Units Astronomy Telescope Types & How They Work Astronomy Solar System Scale Visual Astronomy Cosmological Distance Ladder Astronomy Telescope Types Reference Astronomy Cepheid Variables & Distance Ladder Astronomy Coordinate Systems (RA/Dec, Alt/Az) Astronomy Inner vs Outer Planets Comparison Astronomy Apparent and Absolute Magnitude Reference Astronomy Hubble's Law and the Expanding Universe Astronomy Light-Gathering Power and Telescope Resolution Astronomy Stellar Parallax and Distance Measurement Environmental Science Pollution Types & Effects Environmental Science Air & Water Quality Environmental Science Drinking Water Treatment Reference Environmental Science Greenhouse Gas Inventory Reference Environmental Science Carbon & Ecological Footprint Environmental Science Noise & Light Pollution Environmental Science Life Cycle Assessment Reference Psychology Research Methods and Experimental Design Psychology Sensation vs Perception Psychology Cognitive Psychology Models and Methods Psychology Big Five Personality Traits Reference Psychology Intelligence & IQ Testing SEL Growth Mindset & Goal Setting SEL Pomodoro & Time Management SEL Building Self-Confidence Music Major and Minor Scales Music Reading Sheet Music & Rhythm Music Ear Training & Sight Singing Music Intervals & Chord Building Music Music Notation Symbols Reference Music Tempo & Dynamics Markings Music Time Signatures & Rhythm Values Music AP Music Theory Course Reference Music Guitar Tab & Chord Reference Music Piano Keyboard Reference Music Solfège & Movable-Do Reference Music Triads & Seventh Chords Reference Music Orchestration & Instrument Ranges Reference Music Conducting Patterns Reference Music Music Production & DAW Basics Music Rhythm & Note Values Music Transposing Instruments Reference Music Bass Guitar Basics & Tab Music Guitar Scales & Pentatonic Patterns Music Dotted Notes and Ties Reference Music Note and Rest Duration Tree Reference Physical Education Sports Fitness and Training Principles Physical Education Major Sports Rules Quick Reference Physical Education Exercise Physiology Basics Physical Education Sports & Game Rules Reference Physical Education Basketball Rules & Court Diagram Physical Education Soccer Rules & Field Diagram Physical Education Stretching & Warm-up Routines Physical Education Volleyball Rules & Court Diagram Physical Education Baseball Rules & Diamond Reference Physical Education Football Rules & Field Diagram Physical Education Tennis Rules & Scoring Physical Education Badminton Rules & Court Diagram Physical Education FITT Principle & Training Plans Physical Education Strength Training Fundamentals Physical Education Lacrosse Rules & Field Diagram Physical Education Running Form & Training Plans Art History Composition & Visual Balance Art History Digital Art & Photo Editing Basics Art History Graphic Design Principles Art History One, Two & Three-Point Perspective Art History Typography & Letterforms Art History Ceramics & Pottery Techniques Spanish Clothing & Shopping Vocabulary Spanish Colors, Shapes & Sizes Study Skills Focus & Deep Work Techniques Study Skills SMART Goals & Goal Setting Study Skills How to set a strong goal (SMART goals) Memory Aid Applied Math Dimensional Analysis and Scaling Reference Engineering Engineering Drawings & Blueprints Engineering Materials Science & Properties Engineering The Engineering Design Process Engineering Chemical Engineering Basics Engineering Common Engineering Units Reference Engineering Environmental Engineering Reference Engineering Industrial Engineering & Six Sigma Engineering Stress, Strain & Hooke's Law Reference Engineering Belt & Chain Drive Design Reference Engineering Bolted Joint Strength Reference Engineering Composite Materials & Rule of Mixtures Engineering Cooling Tower Reference Engineering Geometric Dimensioning & Tolerancing (GD&T) Engineering Highway Geometric Design Reference Engineering HVAC Psychrometrics Reference Engineering Industrial Sensors Reference Engineering Lean Manufacturing & 5S Reference Engineering Manufacturing Processes Overview Reference Engineering Pipe Flow & Friction Loss Reference Engineering Protection 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Patient Assessment Medical Science Common Lab Values Reference Medical Science Pain Scales & Assessment Reference Medical Science APGAR Score Reference Medical Science Asthma Action Plan Reference Medical Science Burn Classification & Rule of Nines Medical Science Cancer Staging TNM Reference Medical Science Common Blood Tests Reference Medical Science Common Vital Sign Ranges Reference Medical Science Glasgow Coma Scale Reference Medical Science Hypertension Stages & Treatment Reference Medical Science NIH Stroke Scale Quick Reference Medical Science Pharmacokinetics ADME Reference Medical Science Pregnancy Trimester Milestones Reference Medical Science Common Medical Abbreviations Reference Medical Science EKG Lead Placement Reference Medical Science Electrolyte Imbalances Reference Medical Science Blood Pressure Measurement Technique Medical Science CBC & CMP Lab Panel Interpretation Medical Science Medication Dosage Calculations Medical Science GCS and Pediatric GCS Comparison 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