Debug Algorithm

4+ results

Subtraction Algorithms for all grades

Created by

This file contains the notes I took at the NCTM Conference in Chicago. I attended a presentation on Subtraction by Frances Stern. She taught various ways to subtract with regrouping. My most favorite to use in class is the number line and France's way on pages 6-7. The France way is what I refer to in my class as "Give, Give It Back"...It's SO MUCH EASIER TO TEACH AND UNDERSTAND than the Traditional U.S. way. I don't know where this has been all my life. Please give it a try! It takes some pract

2nd - 9th

Arithmetic, Math, Mental Math

Multiplication Strategy Posters

Created by

KeepCalmAndTeach0n

includes posters for us algorithm, bowtie, breaking up factors, and changing and adjusting numbers

3rd - 7th

Basic Operations, Math

Additive Strategies – Sequence of Learning (NSW Curriculum)

Created by

NquirED

This resource is a clear, structured reference guide for teachers outlining the developmental progression of additive strategies from Early Stage 1 to Stage 3, aligned to the NSW Mathematics curriculum. Rather than isolated strategies or lesson ideas, this document maps how additive thinking develops over time, showing the conceptual links between counting, part–whole understanding, equality, mental strategies, written algorithms, and problem solving. It is designed to support professional learn

K - 7th

Arithmetic, Basic Operations, Numbers

Conceptual Math the Common Core Way: Addition and Subtraction Strategies

Created by

Ms BBZ

This is a full presentation for parents to help them understand our "new" problem-solving strategies and help their kids with their work, as we transition to the Common Core. So often, I have parents say things like, "I have NO idea what my child is doing with all those tally marks," or, "Why aren't you teaching the "up and down" (algorithm)?" We didn't learn to add and subtract this way and it's the #1 thing parents are confused about at conferences. I included a quick tips cheat sheet for pa

K - 3rd

Basic Operations, Math, Place Value

CCSS

1.NBT.C.4

, 1.NBT.C.5

, 1.NBT.C.6