This is a whole lesson on teaching factors and Highest Common Factors (HCF). Updated, 14 slides + resources.
This is aimed primarily at KS3, for pupils that this is the first introduction to factors and finding the highest common factors. It comes as a four-part topic, with the last part on prime factor decomposition, which goes into more advanced questions on HCF. This is available as a bundle/series at a reduced price (approx 30%) and I highly recommend it as a sequence of lessons.
This lesson contains:
+ a starter
+ lesson objectives (differentiated)
+ fantastic teaching examples
+ MWB activities
+ embedded questions with answers
+ additional worksheet (often use for HWK)
+ Tarsia activity
+ Handout on timestables
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