My back yard
my_back_yard.docx | |
File Size: | 61 kb |
File Type: | docx |
Big ideas
Using derived facts.
10x 5 gives the same answer as 5x10 (commutative property, i.e., changing the order of factors) distributive property, i.e., splitting the factors, 5x12 is the same as 5x10 +5x2. |
Support/PromptsWhat are 10 5's?
What 10x do you know? What 5x do you know? Which is easier? Draw it out (as an array?) What different times tables can you see there? This will come from modelling by the students who can already do it initially. Can also draw it out of the discussions around arrays and pictures of thinking. |
Sequenced Student Work
Chose this one because the link between his working out and his picture illustrated the problem really well. There was also the use of the 4x5=20 that could be pulled out of it.
Chose this because it was a different strat to all the rest so it was a challenge for the kids to get their heads around.
Chose this so the kids could talk about a better way of doing the "fores"