Illustrative Mathematics
The Sign of Solutions
Positive or negative, zero or no solution, are all possibilities for the solution of a linear equation. Here the resource gives examples of linear equations in one variable and their type of solutions. The resource comes with commentary...
EngageNY
Properties of Inequalities
Class members explore the meaning of inequality by comparing numbers and building number sentences. Using number cubes, pupils find numbers and compare them using inequality symbols. As the activity continues, operations are added to...
Curated OER
Recognizing Multiples
Can your fourth graders recognize multiples of 10? What about 11 and 12? Use this worksheet to enhance your multiplication lesson, or to assess what your math students already know about finding multiples. Given six sets of numbers, they...
Curated OER
Learning Unit: The Pythagorean Theorem
Middle and high schoolers research the life of Pythagoras and the Pythagorean theorem. They write a short biography of Pythagoras and learn to apply the theorem in their study of right triangles.
Curated OER
Using Fact Families
For this math worksheet, students write two addition problems and two subtraction problems for each fact family. Students also write in the missing addition or subtraction sign and answer 6 questions about a word problem.
Maths Blog
Understand Subtraction - Take Whole Tens
Use a number line to demonstrate subtracting by tens. Learners "hop" backwards down a tens number line to complete subtraction equations. Several different ways to express the operation are included. 
Lakeshore Learning
Equivalent Fraction Activities
Spin the wheel of the fraction contraption and learn about equivalent fractions! After constructing their own spinners, kids use printable pizzas to represent fractions that are equal in value.
Concord Consortium
Betweenness IV
Challenge your classes to think between the curves. Given two function formed by the combination of two exponential functions, individuals must write three functions in which all values would lie between the given. The question is...
Curated OER
The History of Mathematics
Research the interrelationship between math and science.  Search the Internet to discover the history of several branches of mathematics and make text-to-world connections between the concepts covered in each branch with related...
Curated OER
Addition with Regrouping
Now that your class can add, introduce them to adding with regrouping. This presentation provides several models that demonstrate what happens when you regroup. There are several examples and a few practice problems to complete as a class.
Curated OER
Doubles Plus
Doubles and doubles+ 1 addition is a great way to help little learners build number sense and automaticity. This presentation contains multiple examples of doubles and doubles+ 1 addition. Images of dominoes are employed to reinforce the...
Curated OER
Fact Families
These fact families need to be completed. Scholars use addition and subtraction to complete four number sentences for each set of three numbers. The sentences are all part of the number set's fact family, and demonstrate the commutative...
Curated OER
Identifying Patterns
Although this fractions exercise may seem difficult at first, it's really quite simple and intended for beginners to mixed numbers. Scholars complete 15 number sequences by adding two or three mixed numbers or decimal numbers. However,...
Charleston School District
Solving Equations with Infinite or No Solutions
Where did all the variables go? Scholars learn how to interpret an equation when they eliminate all variables during the solving process. They interpret the solution as infinite solutions or no solutions. 
Shodor Education Foundation
Equation Solver
Solve your equation and prove it, too. Young mathematicians solve linear equations using an interactive. They must input a property to justify each step of their solutions. 
Curated OER
Subtraction with Regrouping
Use this handy presentation to clear up any confusion related to subtraction with regrouping. Each slide provides concrete examples of what occurs when one subtracts with regrouping. A full explanation and additional example problems...
Curated OER
Picture Graphs
An innovative way to practice reading data, as well as the four operations! Three picture graphs prompt first graders to count marbles, books, and pets. They also solve addition and subtraction problems. Additionally, they work on...
Beacon Learning Center
Line Plots
Introduce line plots, show examples of tables, graphing on a number line, and engage in a class discussion. Share the process by which statistical data is organized and displayed on a number line. Examples and worksheets are included....
Education Development Center
Word Problem with Rational Numbers—Balancing Bars of Soap
Here's a resource teachers won't want to wash their hands of. Given a task where a full bar of soap is on one side of a balance and 3/4 of a bar of soup and a 3/4-ounce weight is on the other side, young mathematicians must determine the...
Noyce Foundation
Fractured Numbers
Don't use use a fraction of the resource — use it all! Scholars attempt a set of five problem-of-the-month challenges on fractions. Levels A and B focus on creating fractions and equivalent fractions, while Levels C, D, and E touch on...
Curated OER
Number Books
Learners construct a book to illustrate number concepts. They write their numbers on a sheet of paper. Students in grade 1 discuss counting to 100 by different numbers. Pupils in grades (2-4) write basic addition or subtraction story...
Curated OER
Writing a Number Sentence
Third graders analyze word problems. In this number sentence lesson, 3rd graders evaluate word problems. Students create number sentences from word problems.
Curated OER
"One Hundred Hungry Ants" by Elinor J. Pinczes
Young scholars identify arrays and write multiplication and division problems to match. They write their own multiplication book using arrays.
Curated OER
SOL Mini-Challenge
Fourteen multiple choice questions, and all your class needs to do is determine the answers. They analyze each expression and select which of the 4 other expressions is equivalent to the first one. A great way to find out who needs a...