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Use prime factorization to represent numbers as products of prime factors.
Anchor Problem #3 is optional and requires some materials preparation. These dominoes cards can be printed so the pictures can be cut out and optionally pasted onto a cardstock or a different colored paper background. See the note for Anchor Problem #3 for more information.
If you need to adapt or shorten this lesson for remote learning, we suggest prioritizing Anchor Problem 2 (benefits from worked example). Find more guidance on adapting our math curriculum for remote learning here.
Four numbers are shown below. Each number has something unique about it that is unlike the other three numbers. What makes each number different from the others?
For each number below, use a factor tree to write the number as a product of prime factors.
The pictures below represent the numbers 1–7. What do you notice? What patterns do you see? How are these pictures related to the prime factorization of the numbers?
The pictures below represent the numbers 8–14. What do you notice? What patterns do you see? How are these pictures related to the prime factorization of the numbers?
What number does the picture below represent? What would the picture look like for the number 28?
Play factor dominoes using the cards for numbers 1–60.
The following resources include problems and activities aligned to the objective of the lesson that can be used to create your own problem set.