Math: algebra

12 red 6 green

Prepare in advance 17 cubes
Make 2 groups of red and green cubes. One group should consist of 12 red cubes. Another group should consist of 6 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 is larger. 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, 6, 7, 8, 9, 10, 11 and 12. Say: There are twelve (show 12 fingers) cubes in this group. Now we will put the other green cubes in the second row under the red ones. Start putting the green cubes, counting: 1, 2, 3, 4, 5 and 6. Say: There are six (show six fingers) cubes in this group. Place your hand over the first group. Say: here are 12 (show twelve fingers) cubes. Place your hand over the second group. Say: and here are 6 (show six fingers) cubes. The green line is shorter than the red line. That means that red cubes are more than green one.

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