Subtraction

Lesson Plans
Online Lessons - 7 great lessons for students! Learning how to add for the first time? Then get a parent or big kid to help with this stuff. Know your basics, but need to get better at doing subtraction in your head without counting on your fingers? Need to know about regrouping and adding bigger numbers?
Fact Family Lesson - Teaching fact families or Number Families is the best way to help children master the addition and subtraction facts. During second grade students should be switching from counting to memorization through fact families
Subtraction Grades K to 2 - Basic subtraction facts lessons, subtracting 2-digit numbers, with and without regrouping lessons. Problem Solving lessons.
Lesson Plans Page - Several different ideas for teaching first or second grade level students.
How to Teach Regrouping - PDF from the DOE to show teachers "Early Steps Count: Teaching Arithmetic to Prepare Students for Algebra". It begins with teaching regrouping.
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Subtraction

Lesson Plans
AAA Math - Online basic teaching of subtraction: Objects, numbers, words, equations, one - seven digit numbers, tens, with & without renaming, mental math, estimation, money, decimals, time, pounds, ounces & more.
Memorizing Facts - Objective: Students work to memorize facts and check this memorization with timed tests. Uses: Manipulatives, flashcards, flashcards to take home, ziploc bags, letter to be sent home, laminated-magnetic football, bell, basic fact games, addition & subtraction bingo & worksheets.
Dr. Seuss I Can Lick 30 Tigers Today - First grade: The main character reduces the number of opponents through various excuses. The number goes from 30 to 29 to 22, etc. It can be a giant word problem. The story is also an interesting example of a word problem. If the cat (the main character) started with 30 tigers & ended with 1, how many tigers were sent away?
Fun Lesson / Practice - Objective: Students will practice adding & subtracting mentally as well as attach the words "more" & "less" to adding & subtracting. This is a fun alternative to traditional math drills.
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Free teacher & homeschool resources: Free ESL, Reading, Writing, Math worksheets online activities & lessons