University of Minnesota
Fraction Operations and Initial Decimal Ideas
Add another strategy to the toolboxes of young mathematicians with this elementary math lesson on using number lines to add and subtract fractions.
Houghton Mifflin Harcourt
Sushi Monster
These monsters are hungry for sushi and it's your job to feed them. Complete addition and multiplication equations to satisfy their needs while developing math fluency.
EngageNY
Mastering Factoring
Math class is full of drama—there are so many problems to work out! Pupils work out factoring problems. They use quadratic methods of factoring higher degree polynomials, in addition to factoring the sum and difference of two...
Maths Blog
Adding/Subtracting Whole Numbers in Your Head
Exercise those mental math muscles! This worksheet contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
West Contra Costa Unified School District
Factoring Quadratic Expressions
Factor in different strategies in a lesson for factoring quadratics. Young mathematicians first create tables and area models to factor quadratic trinomials into two binomials by guess and check. Learners then investigate how they can...
Education Development Center
Geography of the Number Line
It's more than just numbers on a line, its an organizational, mental math machine to help learners understand the value of numbers. The tool is handy when introducing positive and negative integers to see their values and...
101 Questions
Shorter Shovels
Learners won't have to dig themselves out of a hole thanks to an insightful video. Using the movie Holes as inspiration, individuals must determine the difference in the number of holes dug when digging with a shorter shovel. Because the...
Flipped Math
Calculus AB/BC - Selecting Procedures for Determining Limits
Knowing more strategies is always a plus. Pupils watch an engaging video to learn additional ways to algebraically determine the limit of a function at a specified value. The video covers multiplying radical expressions by their...
K12 Reader
Evaluating Efficiency
There's more than one way to solve a math problem! Introduce your class to this concept with a reading passage. After reading, learners answer five related questions.
Curated OER
Subtract in Columns
In this subtraction worksheet, students complete several subtraction activities that help them subtract in columns and borrow over zeros. Students then add to check their subtraction and then solve several subtraction distance word...
Curated OER
Two-Digit Subtraction With Regrouping
Students practice their subtraction skills by solving 2 digit subtraction equations the teacher lists on the board. In this subtraction with regrouping lesson, students use the regrouping method to solve the 2-digit subtraction equations.
Curated OER
Working Backwards as a Problem-Solving Strategy
For this problem solving strategy worksheet, 3rd graders roll a dice three times and record the number in the hundreds, tens and ones place on the chart, then solve an addition and subtraction problem with that number.
Curated OER
Math Lesson Plan: Pumpkin Addition and Subtraction
Pupils practice their addition and subtraction skills. In this seasonal math lesson, students create pumpkin worksheets that may be used to practice addition and subtraction number sentences.
Curated OER
Strategies for Problem-Solving: Finding Patterns
In this strategies for problem-solving: finding patterns worksheet, 4th graders use a given pattern to answer 3 questions, then determine another pattern to answer 3 more.
Curated OER
Addition and Subtraction Pick n Mix 2
Fourth graders practice a wide range of strategies for solving addition and subtraction problems containing decimal fractions. They add and subtract fractions, decimals and integers while generalizing the properties of operations with...
Curated OER
Make a Match
Second graders examine the relationship between addition and subtraction. In this number sense instructional activity, 2nd graders practice their computation skills and use various strategies (including manipulatives...
Alabama Learning Exchange
Tiger Math Graphing
Learners practice various skills using the book Tiger Math: Learning to Graph from a Baby Tiger. After listening to the story, they create a pictograph using data collected from the text. They also color a picture of a tiger,...
Curated OER
Relationship Between Addition and Subtraction
Students are taught how to add and subtract and use number sense to solve basic math problems. In this addition and subtraction lesson, students are being taught using theories from different philosophers in education. They are given a...
Curated OER
Subtraction: 2 digit numbers with regrouping
For this subtraction worksheet, students subtract two digit numbers from other two digit numbers with regrouping. Students complete 30 subtraction problems.
Curated OER
Problem-Solving Strategy: Use Logical Reasoning
In this problem-solving activity, students solve 1 mathematical word problem by figuring out the answers to 7 questions. Students record their answers on the lines provided.
Curated OER
Math Cross--Puzzle #27
In this hours/minutes and rounding learning exercise, students fill in a crossword puzzle as they solve the answers to twenty-eight math problems or word problems involving hours/minutes and rounding. Students utilize mathematical...
Curated OER
2 digit subtraction
Second graders subtract numbers 0 through 10 from 2 digit numbers using different subtraction methods. In this subtraction lesson plan, 2nd graders practice crossing out numbers in a number line, using a 10, and using their fingers to...
Math Salamanders Ltd.
Subtraction: Two Digit Numbers
In this subtraction with two-digit numbers worksheet, students use a strategy to solve thirty problems in their heads by subtracting tens and then ones.
Curated OER
Mental Math Methods
In this mental math worksheet, students use mental math methods to solve problems. Students complete 1 addition, 1 multiplication, and 1 subtraction problem using these methods.