Tag Archives: 3-digit numbers

Secret 3-digit numbers

For the past two weeks, in my first grade math class, we had been playing with 3-digit numbers. Many of the students in this class are the same ones that participated in the lessons described in the posts 3-digit numbers … Continue reading

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3-digit numbers are tricky! Part II

This is a follow-up post to this one, about introducing 3-digit numbers to kindergartners. I start this lesson by asking the students to come up to the board one by one and write down consecutive numbers starting with 100.  There … Continue reading

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3-digit numbers are tricky!

For the past several weeks, our kindergartners have been playing with 2-digit numbers: they made numbers out of base-10 blocks, wrote them on the board, translated between the two representations, counted by 10’s from different starting points, and more.  We … Continue reading

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