Math: algebra


Prepare in advance 28 cubes.
Put 14 cubes next to you and the other 14 hide behind you. Say today we will see how we can multiply things. Look, we have here 7 cubes (show seven fingers). Count the cubes by pointing to them. Put the 7 cubes in a row in front of the baby. Say: I want to multiply those cubes by 2, it means I want to have 7 cubes put in two rows. Take another 7 cubes and put them right below the first ones. Point to the second row of cubes and count them: 1,2,3,4,5,6,7. Show 7 fingers. Say: now we have to count all of the cubes together. Pointing to the cubes, start counting from the upper left corner, left to right, up to down: 1,2,3,4,5,6,7,8,9,10,11,12,13,14. Fourteen! (show 14 fingers: first show 10 and then 4). 7 multiplied by 2 equals 14! Now let’s make an equation. We will put 7 cubes on the left (put them), then we will put the sign for multiplication (put the sign “x” after the 7 cubes). Now we will put another two cubes after the multiplication sign. (put them). Now we will put the equation sign (put “=”). And after it we will place 14 cubes. Point to the fist 7 cubes and say: this is called factor. Point to the second two cubes and say: they are called factor too. Point to the 14 cubes and say: this is called product. Well done!

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