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Curated OER
Math Lesson Plan: Super Easy 9 Times Tables Trick
Students practice their times tables. In this multiplication practice instructional activity, students learn and practice a method that helps them remember the 9 times table.
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Chisanbop (Korean Counting to 99)
Students practice their counting skills. In this counting lesson, students discover the Chisanbop method of counting which allows them to quickly count to 99 using their hands.
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Place Value
First graders practice place value by completing problems that allow them to group 10 items together to create groups of 10 and see what is left over. In this place value lesson plan, 1st graders use cups to put 10 items in them, and...
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Simplifying Fractions
For this algebra worksheet, students simplify fractions using common denominators. They solve using addition and subtraction. There are 6 questions with an answer key.
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Counting Money
Students read, write, and identify different coin combinations and use this information in real-world situations.
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"It's Verifiable!"
Students examine the differences between fact and opinion. They define fact and opinion, evaluate their favorite fact or opinion on a website, and in small groups write sentences using facts and opinions about school and their favorite...
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Problem-Solving Strategy: Find a Pattern: Problem Solving
In this math patterns worksheet, students use the understand, plan, solve, and look back problem solving strategy to help them find the patterns for the two problems.
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Balanced Or Unbalanced
Students use physical models and graphs in order to solve problems that have their origin in the real world that require algebraic thinking. The words are changed into equations and inequalities in order to be solved. This requires...
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Popsicle Stick Regrouping Fun
Students demonstrate regrouping in subtraction. In this math computation lesson, students use popsicle sticks to practice the regrouping strategy. Students practice several examples of regrouping problems in small groups.
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Estimating and Rounding-Pretest Questions
In this estimating and rounding worksheet, students complete a set of 10 multiple choice questions. Students may click on a link for answers or to print page.
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Colors, Characters, & Clues
Students investigate inferences. They define inference, view a Powerpoint presentation, answer questions about a picture book, and identify clues throughout the story as examples of inferences.
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Jack and the Beanstalk Estimation
Students use estimation and pencil-paper calculations to help Jack and his mother solve a variety of life problems. They solve problems using various math operations, i.e., addition, subtraction, and measurement.
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Story Telling
Students practice story telling. For this story telling lesson, students work in groups to read a fable and divide it into a beginning, middle, and end. Each member takes a section and practices retelling it with vocals, gestures, and...
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Tear + Net = Gross
Second graders find the net weight of a grocery item by weighing it with the tear. For this weight measurement lesson, 2nd graders bring in cans of food and watch a video about weight measurement. Students review the meanings of gross,...
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Adding Ten Tiles I
Young scholars practice this problem that needs a certain amount of experimentation (trial and error) to get any answer at all. In the process they practice their basic number facts. However, to get the complete set of answers Students...
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Looking Through Time
Second graders research their local history and create a books program.
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Subtraction Decimals
In this math worksheet, students subtract the decimals while taking special care to keep the decimals in the correct place value. The answers are also available.
Curated OER
Chart Trivia
Students practice addition and subtraction problems and answer questions using greater than and less than. They chart information to create a graph on the computer.
Khan Academy
Khan Academy: Breaking Apart Two Digit Addition Problems
In this exercise, students practice breaking apart two-digit addition problems. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Khan Academy
Khan Academy: Adding Two Digit Numbers (No Regrouping)
In this exercise, students practice adding two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Mr. Martini's Classroom
Mr. Martini's Classroom: Math Addition With Carrying 2, 3, and 4 Digits
Students solve two, three, and four-digit addition problems with carrying. The sum turns blue if correct.
CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Primary Resources
Primary Resources: Addition and Subtraction Higher Numbers
An extensive selection of teacher resources to aide in teaching and reviewing addition and subtraction of two and three digit numbers, inverse operations, counting on, and other mental strategies for addition and subtraction. Resources...
E-learning for Kids
E Learning for Kids: Math: Hamburger Restaurant: Addition
On this interactive website students practice various math skills using a real life scenario at a hamburger restaurant. Those skills include adding two-digit numbers and three-digit numbers.