Math: algebra

5 red 8 green

Prepare 5 red and 8 green cubes in advance.
Make 2 groups of red and green cubes. One group should consist of 5 red cubes. Another group should consist of 8 green cubes. The cubes in the groups should be scattered in a random order, not put in a straight line or row. The two groups should be located away from each other to make them distinctive groups but not too far from each other so that the baby can see two groups in one location. Smile and say: Baby, which group do you thing is larger and which one is smaller? Let’s make predictions! I think group 1 (point to red cubes) is smaller. Now we can check it out. We will put each group in a row. Start putting red cubes in one row, counting: 1, 2, 3, 4, 5. Say: There are five (show 5 fingers) cubes in this group. Now we will put the other green cubes (point to the second group) in the second row under the red ones. Start putting the green cubes, counting: 1, 2, 3, 4, 5, 6, 7, 8. Say: There are eight (show 8 fingers) cubes in this group also. Place your hand over the first group. Say: here are 5 cubes. Place your hand over the second group. Say: and here are 8 cubes. The red line is shorter than the green line. The green line is longer than the red one. That means that green cubes are more than red one.

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