SE 3.04Geometric Solids

1. 1

   Bring three very different solids to the rug: sphere, cube, cone.

2. 2

   Hold the sphere with both hands and move your hands all over its surface slowly.

3. 3

   Put it down and push it gently to show it rolls.

4. 4

   Feel the cube, and push it to show it slides; feel the cone and show it rolls in a circle and stands on its base.

5. 5

   Give a three-period lesson for the three names.

6. 6

   Present the other solids three at a time on later days.

7. 7

   Return the solids to the basket one at a time.

What catches the child’s eye

• The sphere rolling straight and the cone rolling in a circle
• The cube that will only slide when pushed

Extensions, easiest to hardest

1. Identify solids by touch in a bag or blindfolded.
2. Find objects in the room with the same shape (a ball, a box, a can).
3. Sort solids into those that roll, those that slide, and those that do both.