Math: algebra

7+4=11

Prepare in advance 22 red cubes
Make 2 groups of red cubes. One group should consist of 7 cubes. Another group should consist of 4 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. The other 11 cubes hide behind you. Smile and say: Baby, let’s see which group is larger and which one is smaller. Let’s count cubes in each group. Place your hand above the first group on your left. Say: first let’s count the cubes in the group number one. Start counting by pointing your finger to each cube from left to right in the group number one. Say: one, two, three, four, five, six and seven. There are seven cubes in this group (show seven finger). Place your hand above the second group on your right. Say: now let’s count the cubes in the group number two. Start counting by pointing your finger to each cube from left to right in the group number two. Say: one, two, three and four (show 4 fingers). Place your hand over the first group. Say: this group is larger (show larger by taking open hands away from each other). Larger. Place your hand over the second group. Say: this group is smaller (show smaller with two open hands brought together). Smaller. Let us add the first group to the second. Move the second group close to the first and between the two groups put a “+” symbol, made of sticks or onion leaves. Put the “=” symbol after the second group. Say: let us see how much will be 7 (show seven finger) + 4 (show four fingers). Say: count with me. Point with your finger to each cube before the “=” symbol from left to right. Say: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11. Seven (show 10 fingers and then 1 finger)! There are eleven cubes. Put 11 red cubes you were hiding after the “=” symbol. Say: 7 (show seven fingers) plus 4 (show four fingers) equals 11 (show 10 fingers and then 1 finger).

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