4+2=6 2+4=6 6-2=4 6-4=2
Then they were challenged to take an addition sentence like 4+2=6 and then try 40+20 to get 60. Next step was to extend it further with 400+200 to get 600.
We compared the extension to extra tubes you put on your vacuum sweeper to extend - or reach - somewhere higher or further away.
All in all, a clever way to ssss--tttt---rrr---eeee---tttt----cccc----hhhh---STRETCH our math skills!
Whether you are counting sheep or eggs, math can be fun!!!!!