Dr. Cotter on Addition and Subtraction Facts

Addition  Addition can be thought of as finding the whole when the parts are known. Place value greatly simplifies finding the sum of two numbers. To be efficient in adding, we start with the sums of numbers 1 + 1 through 9 + 9. These are best … [Read more...]

2018 Summer Game #13: On the Number Ten

It is one of those blazing hot, 90º summer days. No one wants to be outside but without air conditioning, inside isn’t much better. My boys’ solution to this dilemma is the nice, cool basement where the computer happens to reside. In my desire to get … [Read more...]

2018 Summer Game #11: Robbie’s Bead Trading

My oldest child, Robbie, wants to be a game inventor when he grows up. He’s invented quite a few games, but the majority of them aren’t really math games. They’re heavy on health and damage stats, power-ups, and battles between different cards.... … [Read more...]

2018 Summer Game #8: Doubles Memory

Today I’m going to show you a quick and easy memory game for practicing the doubles facts: Doubles Memory, game A15 in the Math Card Games book. It takes less than 10 minutes to play, so it’s easy to fit in between runs through the sprinkler… or … [Read more...]

2018 Summer Game #6: Five in a Row Solitaire

Have you ever been caught up in a solitaire game and refused to quit until you won? Of course, then you had to play again to see if you could do it again! That is what today’s game is like: addicting, aggravating, and amusing! Five in a Row … [Read more...]

2018 Summer Game #2: Magic Squares Memory

Beth and I might have had a tussle over who got to write about this next game if it weren’t for the fact that we live about 1300 miles apart. Opps, sorry Beth, that should say “about 2092 km.” Beth's from Canada.  :)  This is her son’s favorite game … [Read more...]