Illustrative Mathematics
Baseball Cards
Here is a resource that demonstrates growth and the initial state of an equation. For this case, your class will be looking at baseball collections. How many baseball cards did the collector start out with, and how many were added or...
Curated OER
20 Tickets
A great hands-on activity involving adding and subtracting, beginner mathematicians determine how many games can be played with 20 tickets. Instead of tickets, youngsters use 20 counters or linking cubes to represent the amount of...
Curated OER
Tetrahedral Dice
Put those thinking hats on and look at all the possible outcomes from rolling two different four-sided dice. The challenge in this problem is finding all the combinations when adding and subtracting the numbers from each die and creating...
Curated OER
Making a Ten
An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, students are taught how to first make a ten and then add on the rest. A similar method is also...
Illustrative Mathematics
Distance to School
A single problem requires learners to write two expressions representing the total distance between a student's home and school over a time span of four weeks. A thorough commentary follows that will help you explore the solutions with...
Illustrative Mathematics
The Napping House
How many people and animals can cram into a single bed? Find out with this cross-curricular math and language arts lesson. Following along with a reading of the children's book The Napping House by Audrey Wood, young mathematicians...
Pedago Net
Acing Math
Deal me in! Elementary and middle school classes will love this selection of math games, all involving a deck of cards. From fractions to exponents to rounding up and down, the games cover such a variety of skills that your classroom...
Oregon Department of Education
Building Number Sense
It's never too early to begin a child's math education. This collection of fun hands-on activities engage youngsters in building their number sense as they learn how to count objects, identify numerals, compare amounts, and much more.
5280 Math
Polygon Polynomials
Patterns in polygons lead to patterns in polynomials. Presented with a series of polygons, individuals create polynomial expressions to represent their patterns. The algebra project consists of nine problems that incorporate polynomial...
Math Is Fun
Math Is Fun: Adding and Subtracting Time
Students learn how to add and subtract time. Class notes and practice problems with solutions are provided.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Adding and Subtracting Polynomials
Twenty-five problems present a variety of problems adding and subtracting polynomials. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Adding and Subtracting Rational Expressions
Sixteen problems present a variety of practice adding and subtracting rational expressions. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
CK-12 Foundation
Ck 12: Add and Subtract Compound Units of Time
[Free Registration/Login may be required to access all resource tools.] Adding and subtracting units of time.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Adding, Subtracting and Multiplying Polynomials
Forty-four problems present a variety of practice adding, subtracting and multiplying polynomials. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
University of Cambridge
University of Cambridge: Nrich: Fun Time
On this one page website sharpen your logic and fraction skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Game Asteroid Blast
Use this game to improve your addition, subtraction, multiplication, and division basic facts. Practice all these skills and have fun at the same time! There is a "Get Printable Page," link at the top to print out the materials you need.