What this lesson teaches
LCM and HCF.
Can you finish lcm hcf with blocks in about 30 min?
You will lCM and HCF.
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LCM and HCF.
LCM and HCF are fundamentally about grouping — a concept that only becomes clear when students physically arrange objects into sets and look for alignment. Abstract calculation of these values gives correct answers without understanding; block manipulation builds understanding before algorithms.
1. Take 12 blocks. 2. Group in 2s 3s 4s 6s. 3. Take 18 blocks. 4. Find common groupings.