Students will learn what it means to represent a number in different ways and will begin to explore decomposing numbers. Included is a detailed lesson plan, link to an online game, worksheet, center ideas, and a "Ways to Make 10" chart.
Explore subtraction and addition but having student collect data from rolling objects. This lesson has students adding and subtracting numbers they collected using strategies used in class. Use the document and video found on this page to implement this lesson.
The purpose of this task is for students to find different pairs of numbers that sum to 4.
Students use addition or subtraction to solve these types of word problems.
This word problem has 10 possible solutions.
The distributive property of multiplication over addition allows us to eliminate the grouping symbol, usually in the form of parenthesis. Illustrates the basic pattern or formula and how to apply it.
The purpose of this task is for students to find different pairs of numbers that sum to 7.
A number of different ways to approach complex numbers and operations with them.
Rational expressions have never been so easy! Use this site to learn how to add and subtract them with ease and confidence. And common denominators? No Problem! Great practice problems are included to see how much you've learned.
Generate equivalent expressions using two additive properties. This video focuses on using the associative and commutative properties of addition to combine like terms, simplify expressions, and create equivalent expressions.
This short video and interactive assessment activity is designed to teach second graders about mixed operations: selecting the correct sentence.
This short video and interactive assessment activity is designed to teach second graders about more and less (addition and subtraction).
This short video and interactive assessment activity is designed to teach third graders about word problems that compare values.
This short video and interactive assessment activity is designed to teach second graders about comparing with two-step addition and subtraction.
The purpose of this task is to foster a classroom discussion that will highlight the difference between multiplicative and additive reasoning.
The purpose of this task is to assess studentsŐ understanding of multiplicative and additive reasoning.
The purpose of this task is to help develop students' understanding of addition of fractions; it is intended as an instructional task.
In this video from Cyberchase, Harry must score a total of 50 points in various events to qualify for the Northern Hemisphere games in New Orleans.
This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.
In this Cyberchase video segment, Matt uses subtraction to help Digit figure out how much time he has left in a cooking contest with Hacker.