Prepare in advance 6 yellow and 8 blue cubes
Make 2 groups of yellow and blue cubes. One group should consist of 6 yellow cubes. Another group should consist of 8 blue 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 think is larger and which one is smaller? Let’s make predictions! I think group 1 (place your hand above it) is larger. Now we can check it out. Let’s build two towers: one yellow (point to the yellow cubes), and one blue (point to the blue cubes). Start putting yellow cubes in one tower, counting: 1, 2, 3, 4, 5, 6. Say: There are 6 (show 6 fingers) cubes in the yellow tower. Now we will build another tower with blue next to the yellow one. Start putting the blue cubes, counting: 1, 2, 3, 4, 6, 7, 8. Say: There are 8 (show 8 fingers) cubes in the blue tower. Place your hand over the first tower. Say: here there are 6 cubes. Place your hand over the second tower. Say: and here there are 8 cubes. The blue tower is higher than the yellow one. The yellow tower is shorter than the blue one. That means that blue cubes are more than yellow ones. Let also put them in rows and see which row will be longer. Put all yellow cubes in one row counting. Put blue cubes in another row under the yellow one counting. Point to the first row and say: the blue row of cubes is longer. It means blue cubes are more. Point to the yellow row and say: the yellow row of cubes is shorter. It means the yellow cubes are less.
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