Lets add 18 and 16. Now kids are not comfortable adding18 and 16 so we need to make some friends and anchor to them. Now in this case I choose to anchor to 2 tens which make up 20 (using a hybrid upgrade model or jumbo friends). So, we want to turn our enemy, 18, into a jumbo friend, 20, by looking for partnerships in 16. One partnership is a 1 and a 15, but we cant anchor the 18 and the one together to get a jumbo friend, so we must go out looking for more partnerships. The next partnership starts by adding a 1 to that 1 to get 2 and taking another 1 from the 15 to get 14. Our new partnership is 2 and 14. We now see if we anchor the 18 and the 2 together, we get our jumbo friend 20. Thats how 18 and 16 make a 20 (an isolated fact). So, adding 18 and 16 becomes adding 20 and 14, which is more friendly to the kids and the solution is 34. This is for advanced students. The differently matured students may need to try the gathering friends of 10 s like we a kicking shins method, which allows the student to gather 2 tens from 20 and 1 ten from 14 to give you 30, so that the problem reduces to 30 + 4= 34, which we believe even your idiot kid can do without a calculator or a self-esteem class. For kicks, suppose I went though the above process but my solution was 35 instead of 34. Write a 5 page essay explaining what I did wrong, if anything.
Posted on: Wed, 01 Oct 2014 21:49:21 +0000
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