South Dakota Science 2-PS1-3
The Standard
Construct an evidence-based account of how an object made of a small set of pieces can be disassembled and made into a new object. (SEP: 6; DCI: PS1.A; CCC: Energy/Matter)
South Dakota Science Standards (2024) · Matter and Its Interactions
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students take apart an object made from a few pieces and use those pieces to make something different. They draw or describe both objects and explain what shows the pieces were reused.
What Mastery Looks Like
- A student can make two different objects with the same six blocks. Their drawings show where the blocks went, and their counts show that none were added or left out.
Common Misconceptions
- Students may think they need to add pieces to make a new object. They may think the pieces themselves must change, or overlook a missing piece when comparing the two objects.
How to Assess It
- Give students six snap cubes. Have them build a tower, take it apart, and build a staircase. Ask them to draw both and write how they know the same cubes were used.
Lesson moves
Ways to Teach It
Give pairs five magnetic tiles to make an open box, then a flat path; have them sketch both and count the tiles.
Show drawings of a tower and staircase made from the same six colored blocks; ask which details support that claim.
Run a rebuild relay: teams copy one block picture, then rearrange those blocks to copy a second picture without getting more.
Show photos of a modular couch arranged as a sofa and as separate chairs; have students circle cushions used in both.
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Printable 2-PS1-3 Worksheet
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