Science Grade 2-3

Science Tools: Ruler, Thermometer, Balance, and Hand Lens

Choosing and using tools to measure and observe

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Choosing and using tools to measure and observe

Science - Grade 2-3

Instructions: Read each problem carefully. Choose the best science tool and explain your thinking when asked.
  1. 1
    A pencil next to a ruler.

    Mia wants to find out how long a pencil is. Which science tool should she use?

  2. 2
    A thermometer in a classroom.

    A class wants to know how warm the classroom air is. Which science tool should they use?

  3. 3
    Two rocks on a balance scale.

    Leo wants to compare the mass of two rocks. Which science tool should he use?

  4. 4
    A hand lens magnifying the lines on a leaf.

    A student wants to look closely at the tiny lines on a leaf. Which science tool should the student use?

  5. 5
    A ruler, thermometer, balance scale, and hand lens.

    Draw a line to match each tool with what it measures or helps you observe: ruler, thermometer, balance, hand lens. Choices: temperature, length, tiny details, mass.

  6. 6
    A crayon lined up with a ruler.

    Nora measures a crayon with a ruler. One end is at 0 centimeters and the other end is at 9 centimeters. How long is the crayon?

  7. 7
    Two thermometers showing outside warmer than inside.

    A thermometer reads 30°C outside and 20°C inside. Which place is warmer?

  8. 8
    A balance scale with the apple side lower than the banana side.

    A balance has an apple on one side and a banana on the other side. The apple side goes down. Which object has more mass?

  9. 9
    A hand lens magnifying an ant’s legs.

    Which tool would help you observe the legs of an ant more clearly: a ruler, thermometer, balance, or hand lens?

  10. 10
    A desk with a ruler along its edge and a thermometer nearby.

    Sam says, 'I can use a thermometer to find the length of my desk.' Is Sam correct? Explain your answer.

  11. 11
    A shorter plant and a taller plant next to a ruler.

    A plant grew from 6 centimeters tall to 10 centimeters tall. Which tool could measure the plant's height, and how much did it grow?

  12. 12
    A hand lens observing sand and a balance comparing sand piles.

    You want to observe grains of sand and then compare the mass of two piles of sand. Which two tools should you use?

  13. 13
    Four science tools: ruler, thermometer, balance scale, and hand lens.

    Look at the picture of four science tools. Write the name of each tool and one job it does.

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