- Supply box
- A mat
- Invite the child to come and work with you.
- Have him unroll a mat and have him bring the supply box over to it.
- Have the child set out the material on the mat as in the Supply Mat.
- Have the child count out the units and place then in a vertical line.
- When he gets to ten units, show him how it looks just like the ten-bar.
- Have the child continue in this manner, each time noticing the look alike to the ten-bar.
- Continue until there are no more units. Look at the remaining units that cannot be formed into a ten-bar and ask the child if there are enough units to create a ten-bar. Ask the child why this is so.
- Have him count how many ten-bars he had made by using the units.
- Have him then count the ten-bars and place them side by side.
- When he has counted ten ten-bars, notice how it looks just like the hundred square.
- Repeat until all of the ten-bars have been used. If there are some ten-bars left over, ask the child if there are enough to make a hundred square. Discuss why with the child.
- Have the child count how many hundred squares he made by using the ten-bars.
- Then have the child count the hundred squares by stacking them on top of each other.
- When the child reaches 10 hundreds, discuss how this looks like the thousand cube.
- Repeat until there are no more hundred squares. If there are any left over that cannot be made into a thousand cube discuss why with the child.
- Have the child count how many thousand cubes he made using the hundred squares.
- Go back and count how many units, tens, and hundreds were left over.
- Then put the material away.
To make the child aware that 10 units can be changed into a ten-bar, ten ten-bars can be changed into a hundred square, and ten hundred squares can be changed into a thousand cube.
The material and the directress.
4 1/2 years
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