explain two digit multiplication to a 2nd grade student. Use visual aids.

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Welcome to two-digit multiplication! Today we'll learn how to multiply twelve times three using special blocks. The long blue block represents ten, and each yellow square represents one. So the number twelve is made of one ten-block and two one-blocks. Now let's make three groups of twelve. Each group contains one ten-block and two one-blocks, just like our number twelve. We have group one, group two, and group three. This shows us what twelve times three means - we have three groups, and each group has twelve items. Now let's count the ten-blocks first. We have three groups, and each group has one ten-block. So we add ten plus ten plus ten, which equals thirty. This is the same as three times ten equals thirty. Next, let's count all the one-blocks. We have three groups, and each group has two one-blocks. So we add two plus two plus two, which equals six. This is the same as three times two equals six. Great job! Now let's add our answers together. We found that the ten-blocks give us thirty, and the one-blocks give us six. When we add thirty plus six, we get thirty-six. So twelve times three equals thirty-six! This method helps us break big multiplication problems into smaller, easier parts.