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Lesson Three:

Lesson Three:. Comparing Solids: Roll or Stack. Think and Wonder. What are some things that roll ? Describe their shape. What are some things that stack ? Describe their shape. Now:.

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Lesson Three:

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  1. Lesson Three: Comparing Solids: Roll or Stack

  2. Think and Wonder What are some things that roll? Describe their shape. What are some things that stack? Describe their shape.

  3. Now: • Make predictions about whether your 20 solids will ROLL or STACK and test them. -

  4. Link to LRB In your Laboratory Record Book (LRB): • Place the solids in the “ROLL” circle, the “STACK” circle, or in the overlapping part of the circles if the object can both roll and stack. • Write the names of the objects in the part of the circle(s) in which they belong.

  5. Drag the objects to their place in the diagram: Roll Stack -

  6. Consider: • Do all the round solids roll? • Do all the solids with flat sides stack? • Why do you think the cork and the acrylic cylinder both roll and stack? • Which solids would you use to build a tower? Why? -

  7. Link to LRB In your Laboratory Record Book (LRB): • Record the names of the properties we investigated today on the “Properties of Solids” chart (Lesson 2 in your LRB), lines 3 and 4 of the first column. • Record the question the we can ask to help us observe each of the new properties on lines 3 and 4 of the second column.

  8. Link to LRB In your Laboratory Record Book (LRB): Today I learned why some solids stack and some solids roll. A ________ rolls because___ _______________________. A _______ stacks because___ _____________________.

  9. Partner Groups: Take inventory of your bag of 20 solids: Blue objects: plastic spoon, rubber ball, wood cube bead, Unifix Cube Red objects: wood golf tee, pipe cleaner, octagon jewel, plastic button Metal objects: steel ball, steel washer, steel nut, paper clip, brass washer, bobby pin White objects: Ping-Pong ball, small taster spoon Transparent objects: plastic cup lid, acrylic cube, acrylic cylinder Cork Return your materials to the Blue Science Bins.

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