For Ages 11 to 14

Grades 6-8 Tools & Labs

29 interactive tools plus 15 investigation labs for middle school. Ratios, algebra, geometry, statistics, physical science, life science, earth science, and computer science. Everything runs free in the browser with no accounts required.

29 tools 15 labs CCSS & NGSS aligned
Math Math Labs Physical Science Life Science Earth Science Science Labs Computer Science

Math & Statistics

Ratios, Algebra, Geometry & Statistics

Build fluency with the core CCSS 6th through 8th grade standards: ratios, proportional relationships, equations, transformations, and statistical analysis.

Ratio & Proportion Visualizer

Explore ratios with tape diagrams, equivalent ratio tables, unit rates, and cross-multiplication proportion solving.

6.RP.1, 6.RP.3

Percent Calculator & Visualizer

Four modes for every percent problem: find the part, the percent, the whole, or percent change. 100-grid and bar model visuals with step-by-step math.

6.RP.3c, 7.RP.3

Integer Number Line

Add or subtract integers on a visual number line. Arrow shows direction and distance, with step-by-step explanations for negative number operations.

6.NS.5, 7.NS.1

Equation Balance Scale

Solve one-step and two-step equations visually with an SVG balance scale. See step-by-step operations applied to both sides.

6.EE.7, 7.EE.4

Exponent & Powers Explorer

See expanded multiplication, area and volume models, powers tables, and rules for zero and negative exponents. Visual models for squares and cubes.

6.EE.1, 8.EE.1

Mean, Median & Mode Explorer

Enter a dataset to see mean, median, and mode on an interactive number line with a balance-point fulcrum, box plot, and step-by-step calculations.

6.SP.3, 6.SP.5

Pythagorean Theorem Explorer

Solve for any missing side with step-by-step math, see the visual proof with colored squares on each side, and generate Pythagorean triples.

8.G.7, 8.G.8

Angle Relationships Explorer

Visualize complementary, supplementary, vertical angles, and parallel lines with transversals. Color-coded equal angle pairs.

7.G.5, 8.G.5

Area & Perimeter Explorer

Calculate area and perimeter of rectangles, triangles, parallelograms, trapezoids, and circles with SVG visuals and step-by-step formulas.

6.G.1, 7.G.6

Geometric Transformations Visualizer

Visualize translations, rotations, reflections, dilations, and compositions on a coordinate plane. See original and transformed shapes side by side.

8.G.1, 8.G.3

Math Labs

Investigation Labs for Math

Structured lab investigations with data tables and guided experiment prompts to reinforce algebra, geometry, and statistics concepts.

Equation Balance & Intro Algebra Lab

Solve linear equations with a visual balance scale. Apply inverse operations step by step, handle variables on both sides, and verify solutions by substitution.

6.EE.7, 7.EE.4

Ratio, Proportion & Percent Lab

Visualize ratios with bar models, solve proportions using cross-multiplication, and calculate percent change. Discover the asymmetry of percent increase and decrease.

6.RP.3, 7.RP.3

Integer Operations & Absolute Value Lab

Visualize integer addition and subtraction on a number line with directional arrows. Discover sign rules for multiplication and division.

6.NS.5, 7.NS.1

Mean, Median & Mode Lab

Enter number datasets, compute mean, median, mode, and range, and record multiple datasets to discover when each measure of center best represents the data.

6.SP.3, 6.SP.5

Pythagorean Theorem Lab

Investigate the relationship between the sides of a right triangle. Adjust leg lengths, compute the hypotenuse, verify a squared plus b squared equals c squared.

8.G.7, 8.G.8

Physical Science

Forces, Energy, Waves & Circuits

Explore the NGSS MS-PS performance expectations: Newton's laws, energy conservation, wave behavior, and basic circuits.

Forces & Free-Body Diagram Tool

Explore Newton's second law with interactive free-body diagrams on surfaces, inclines, and more.

MS-PS2-1, MS-PS2-2

Energy Conservation Explorer

Track kinetic, potential, and spring energy as an object moves along ramps, roller coasters, and spring systems.

MS-PS3-1, MS-PS3-5

Wave Explorer

Visualize transverse waves, superposition, interference, and standing waves.

MS-PS4-1, MS-PS4-2

Circuit Calculator

Calculate voltage, current, resistance, and power with Ohm's law. Build series and parallel resistor networks with step-by-step equivalent resistance.

MS-PS2-3

States of Matter Playground

Watch particles change behavior as temperature changes. See solids melt to liquids and boil to gases with animated particles, heating curves, and property comparisons.

MS-PS1-1, MS-PS1-4

Life Science

Cells, Genetics, Ecosystems & Populations

Cover the NGSS MS-LS standards: cell division, photosynthesis, Punnett squares, food webs, and population dynamics.

Cell Cycle / Mitosis-Meiosis Viewer

Interactive viewer for cell division. Step through every phase of mitosis and meiosis with SVG chromosome visualizations.

MS-LS1-5

Photosynthesis Explorer

Explore photosynthesis rates under different light intensities, CO2 concentrations, and temperatures. See light response curves and limiting factors.

MS-LS1-6, MS-LS1-7

Genetics & Punnett Square Calculator

Generate Punnett squares for monohybrid, dihybrid, incomplete dominance, and sex-linked crosses. Color-coded SVG grid with genotype and phenotype ratios.

MS-LS3-2

Food Chain & Food Web Builder

Build food chains and food webs by connecting producers, consumers, and decomposers. See energy flow arrows and simulate species removal.

MS-LS2-3, MS-LS2-4

Population Growth Simulator

Simulate exponential, logistic, and Lotka-Volterra predator-prey population models with carrying capacity, inflection points, and phase portraits.

MS-LS2-1, MS-LS2-4

Earth Science

Plate Tectonics, Weather, Space & Climate

Investigate the NGSS MS-ESS standards: plate boundaries, earth history, weather patterns, moon phases, and human impacts on climate.

Plate Tectonics Explorer

Explore plate boundary types, the rock cycle, radiometric dating, and Earth's internal layers. View cross-sections of divergent, convergent, and transform boundaries.

MS-ESS2-1, MS-ESS2-3

Weather & Water Cycle Explorer

Explore the water cycle with an animated diagram, predict weather from temperature and humidity, identify cloud types, and compare seasonal patterns.

MS-ESS2-4, MS-ESS2-5

Earthquake Magnitude Calculator

Four modes: magnitude scales, energy comparison, Modified Mercalli Intensity, and Richter magnitude from seismograph amplitude.

MS-ESS2-2

Moon Phases & Eclipse Geometry Explorer

Explore the lunar cycle, eclipse conditions, and seasonal day length. Visualize moon illumination across 8 phases and compute eclipse geometry.

MS-ESS1-1, MS-ESS1-2

Carbon Footprint Calculator

Estimate annual CO2 emissions from transportation, home energy, diet, and lifestyle. Pie chart breakdown, country comparison, and trees-to-offset metrics.

MS-ESS3-3, MS-ESS3-4

Science Labs

Investigation Labs for Science

Record data, run guided experiments, and export lab reports for physical, life, and earth science topics.

Photosynthesis Lab

Investigate photosynthesis rates under different light intensities, CO2 concentrations, and temperatures. Discover limiting factors and measure net O2 production.

MS-LS1-6, MS-LS1-7

Friction Ramp Lab

Place objects on an inclined ramp, change the angle and surface material, and calculate whether the object slides. Investigate static and kinetic friction.

MS-PS2-2

Simple Weather Station Lab

Log daily weather observations over two simulated weeks. Record temperature, cloud cover, wind, and precipitation, then identify patterns across the 14-day period.

MS-ESS2-5

Sink or Float Lab

Predict whether 12 everyday objects will sink or float, then test them in a virtual water tank. Discover how density determines buoyancy.

MS-PS1-1

Angle Builder Lab

Build angles from 0° to 360°, classify each as acute, right, obtuse, straight, or reflex, and record data to discover the boundaries between angle types.

7.G.5, 8.G.5

Pythagorean Theorem Lab

Investigate the relationship between the sides of a right triangle. Adjust leg lengths, compute the hypotenuse, and identify Pythagorean triples.

8.G.7

Mean, Median & Mode Lab

Enter number datasets, compute mean, median, mode, and range, and discover when each measure of center best represents the data.

6.SP.3, 6.SP.5

Earth History Lab

Calculate rock ages using radiometric dating with multiple isotope systems. Measure plate motion rates from magnetic reversal distances.

MS-ESS1-4, MS-ESS2-3

Computer Science

Number Systems, Algorithms & Logic

Explore binary and hex number systems, sorting and pathfinding algorithms, and Boolean logic circuits. CSTA 6-8 standards.

Binary, Decimal & Hex Converter

Convert between binary, decimal, hexadecimal, and octal. Bit-level visualization, ASCII lookup, and step-by-step conversion methods.

CSTA 2-DA-07

Sorting Algorithm Visualizer

Watch bubble, selection, insertion, merge, and quick sort in action with color-coded bars for comparisons, swaps, and sorted elements.

CSTA 2-AP-19

Logic Gate Circuit Simulator

Select predefined circuits with AND, OR, NOT, XOR, NAND, NOR gates. Toggle inputs and see outputs update in real time with auto-generated truth tables.

CSTA 2-CS-02

Pathfinding Algorithm Visualizer

Visualize BFS, DFS, Dijkstra, and A* on an interactive grid. Draw walls, set weighted cells, generate mazes, and watch each algorithm explore step by step.

CSTA 2-AP-19

Number Systems Lab

Investigate binary and hexadecimal number systems. Convert between bases, explore bit patterns, and discover how computers represent integers.

CSTA 2-DA-07

Searching & Sorting Performance Lab

Compare linear search, binary search, selection sort, insertion sort, and merge sort side by side. Collect performance data across array sizes.

CSTA 2-AP-19

Standards Covered

  • CCSS Math 6: 6.RP (ratios), 6.NS (number system), 6.EE (expressions and equations), 6.SP (statistics)
  • CCSS Math 7-8: 7.EE (linear equations), 8.G (geometry and transformations), 8.SP (bivariate data)
  • NGSS MS-PS: Forces and interactions, energy, waves and electromagnetic radiation
  • NGSS MS-LS/ESS: From genetics and ecosystems to plate tectonics, weather, and human impacts

Mission Packs

Curated sets of tools and labs organized around a theme. Great for units or project-based learning.

Forces & Motion Data & Statistics Geometry Earth & Weather

Looking for More?

Browse the full catalog of free interactive tools and virtual labs across every grade band and subject.

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