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...] about Dr. Cotter on Addition and Subtraction Facts
addition
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...] about 2018 Summer Game #13: On the Number Ten
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...] about 2018 Summer Game #11: Robbie’s Bead Trading
2017 Summer Game #18: Mental Addition
One of the many aspects that drew me to RightStart™ Math was the idea of my children learning how to do mental math. Growing up, the whole idea of mental math was fascinating to me, but it was not encouraged. And, to be honest, I really doubted my … [Read more...] about 2017 Summer Game #18: Mental Addition
Quilting and the AL Abacus
I am a quilt designer. I’ve made about 200 quilts in my lifetime, 98% of my own design. I’m currently working on my fourth quilt from someone else’s pattern. I have the directions in front of me as I’m approaching on the final steps of Bonnie … [Read more...] about Quilting and the AL Abacus
RS2 Level C, Lesson 113
This week’s blog is coming in from California and is compliments of Karen and her eight-year-old son, Aaron. They are in RS2 Level C, Lesson 113, and had a question on the worksheet. Lesson 113, Addition Sum Line Plots, has us first determine the … [Read more...] about RS2 Level C, Lesson 113
