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Build, take apart and rebuild with the same pieces

2nd grade (Year 3 in England) · 16 questions · Common Core: NGSS.2-PS1-3 · England: KS1 Y2 Uses of everyday materials

Name

Date

Score/ 16

  1. Question 1

    Maya builds a bridge from 37 building bricks, then takes it apart and uses every brick to build a car. How many bricks are in the new model?

    Answer

  2. Question 2

    A model castle is made of 9 wooden blocks. Each block has a mass of 5 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

    Answerg

  3. Question 3

    A puzzle is broken up into 100 pieces and put back together. Which is TRUE?

    • A. It is now heavier.
    • B. It is made of a new material.
    • C. It has the same pieces and the same mass as before.
    • D. It has more pieces.

  4. Question 4

    Sam builds a tower from 16 building bricks, then takes it apart and uses every brick to build a house. How many bricks are in the new model?

    Answer

  5. Question 5

    A model castle is made of 15 wooden blocks. Each block has a mass of 10 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

    Answerg

  6. Question 6

    A wall is knocked down and its bricks are used to build a garden shed. What has changed?

    • A. the number of bricks, which doubles
    • B. the bricks turn into wood
    • C. the material of the bricks
    • D. the shape of the thing the bricks make

  7. Question 7

    Sofia builds a house from 28 building bricks, then takes it apart and uses every brick to build a car. How many bricks are in the new model?

    Answer

  8. Question 8

    A model castle is made of 8 wooden blocks. Each block has a mass of 10 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

    Answerg

  9. Question 9

    Why are many toys and buildings made of small pieces joined together?

    • A. Small pieces are always stronger than anything else.
    • B. Pieces disappear if they are big.
    • C. Big pieces cannot be made.
    • D. Small pieces are easy to carry and can make many different shapes.

  10. Question 10

    Hana builds a car from 21 building bricks, then takes it apart and uses every brick to build a tower. How many bricks are in the new model?

    Answer

  11. Question 11

    A model castle is made of 13 wooden blocks. Each block has a mass of 20 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

    Answerg

  12. Question 12

    A puzzle is broken up into 100 pieces and put back together. Which is TRUE?

    • A. It has the same pieces and the same mass as before.
    • B. It is made of a new material.
    • C. It is now heavier.
    • D. It has more pieces.

  13. Question 13

    Yuki builds a car from 37 building bricks, then takes it apart and uses every brick to build a house. How many bricks are in the new model?

    Answer

  14. Question 14

    A model castle is made of 14 wooden blocks. Each block has a mass of 10 g. The castle is taken apart and rebuilt as a boat with all the same blocks. What is the mass of the boat?

    Answerg

  15. Question 15

    A puzzle is broken up into 100 pieces and put back together. Which is TRUE?

    • A. It is now heavier.
    • B. It has the same pieces and the same mass as before.
    • C. It has more pieces.
    • D. It is made of a new material.

  16. Question 16

    Nia builds a tower from 21 building bricks, then takes it apart and uses every brick to build a bridge. How many bricks are in the new model?

    Answer

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Answer key: Build, take apart and rebuild with the same pieces

  1. 1. 37

  2. 2. 45 g

  3. 3. C. It has the same pieces and the same mass as before.

  4. 4. 16

  5. 5. 150 g

  6. 6. D. the shape of the thing the bricks make

  7. 7. 28

  8. 8. 80 g

  9. 9. D. Small pieces are easy to carry and can make many different shapes.

  10. 10. 21

  11. 11. 260 g

  12. 12. A. It has the same pieces and the same mass as before.

  13. 13. 37

  14. 14. 140 g

  15. 15. B. It has the same pieces and the same mass as before.

  16. 16. 21