1. Math Mammoth news
2. Looking back: Ten years ago (grades 1-6)
3. How to help your kids fall in love with math
4. A child is not getting addition facts (grades 1-5)
5. Math teacher's feelings
6. A different approach to two-column proofs (grade 10)

1. Math Mammoth news

1. You can now purchase LESSON PLANS for the Light Blue series right at the Math Mammoth website! I also made a page with (hopefully) lots of information and screenshots on these lesson plans and how they work.
   
   => Lesson plans for Math Mammoth Light Blue series


2. I have edited & uploaded some videos related to basic DIVISION concept for 3rd grade. I also then made a page that lists my videos available for third grade math.

2. Looking back: Ten years ago

• Calculator activities for 2nd grade
  I don't actually advocate using a calculator for any basic math until 5th grade. I want children to learn lots of mental math first! But, it can be useful to show children some new concepts, such as negative or large numbers, or to show them patterns. So here are just a few activities along those lines.
• Teaching elementary mathematics - don't skip stages
  How Ron Aharoni was surprised that he did NOT know how to teach elementary mathematics, in spite of his knowledge of university level math.

3. How to help your kids fall in love with math

4. A child is not getting addition facts

Hi! I would love some insight and had Math Mammoth recommended to me. My daughter is 7 and in first grade. She is a natural at reading/spelling and is very much a perfectionist. She is not "naturally" mathy. I wasn't either in school and got left behind in math pretty quickly in traditional school.

We are using Math U See and have been since K. A mastery approach made sense to me as you don't move on until you have fully mastered something. The problem is what if mastery takes so long that you feel like you are just beating a dead horse so to speak? She understands the "why" behind the addition facts but can't seem to get fluent in them.

I now feel like I moved her too fast because I am seeing her lose confidence and just shut down and get teary when trying to do basic subtraction. I originally felt it was ok to move on because by "adding back up" to check the subtraction she could still be reviewing the addition facts you know?

Anyway, I am wondering if complete mastery is too much for a struggling math student. Would you recommend Math Mammoth for her? I want her to have an understanding that I never got in school. Help!

5. Math teacher's feelings

6. A different approach to two-column proofs

Leading into proof writing is my favorite part of teaching a Geometry course. I really love developing the logic and process for the students. However, I have noticed that there are a few key parts of the process that seem to be missing from the Geometry textbooks.

I started developing a different approach, and it has made a world of difference! I noticed that the real hangup for students comes up when suddenly they have to combine two previous lines in a proof (using substitution or the transitive property). Most curriculum starts with algebra proofs so that students can just practice justifying each step. They have students prove the solution to the equation (like show that x = 3).



These just were not sufficient to prevent the overwhelm once the more difficult proofs showed up.