l + d + t = 12
l + t = 8
l + d = 7
Solve for l, d, t...
Now make up some of your own...
Then lets go back to some "regular" problem solving, which seems extra easy now that we only have one variable to figure out...later once the concepts are fully understood we can go back and have multiple lions and tigers and dogs, oh my. (I couldn't resist.) Later we can introduce two lions, then maybe two lions and three tigers...etc...
Right now what to do when a negative number shows up?...understand same, hero zero and no fun get back to one.
Here is a quick screencast on it...for more go to the problem solving page at Crewton Ramone's House of Math.
Face Book Me.
Look they practically give the thing away...get one if you haven't already got one tucked away somewhere. Great for making highskool kids see how easy it can be...
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