problem 6 figure

Level G, Lesson 154

Susan wrote us: “Hello, my son and I are struggling with Lesson 154, with problems 9 & 10. Can we please have an explanation? Love your materials! Thank you.” Well, Susan, this took me a while to come up with a good clear explanation! Here’s ... Read More

long division cover

Dr. Cotter on Long Division

As far as long division is concerned, it no longer has the importance it had in past generations. No one today spends time on their job doing long division. Long division with that guessing component is not used higher mathematics. It is rarely on ... Read More

multivide cover

Dr. Cotter on Multivides

For a child with learning disabilities doing multivides, I suggest this shorter version: Start with any 4-digit number and multiply it by 4, then 5, and 6. Then divide the final product by 4, then 5, and 6. The final quotient must be the same as ... Read More

Lesson 110

Level G, Lesson 110

Nicea called me for help with RightStart Mathematics: A Hands-On Geometry Approach, also known as Level G. She is homeschooled and is working through the program with some assistance from her mom, Julia, and a little assistance from me. Today’s ... Read More


Struggling Learner: Check Please!

I don’t know about you, but I LOVE checking things off my list. I love to schedule and create lists. For me, lists motivate and inspire me to get things done. Sometimes I make a list just so I can check things off! However, I must admit, not being ... Read More


Struggling Learner: Counting Challenges

We’ve had some conversations lately with parents of children who are struggling with counting. Sharon writes: “Any tips for children with dyscalculia? My daughter has had a horrible time learning to count. She is now 7 and still has a very hard time ... Read More