Numbers and Operations Teacher Resources

The principles behind pulleys, levers, and simple machines are the focus of a science lesson plan. In it, learners take part in a whole-class activity. There are two groups of pupils who each must lift objects with fixed pulleys and...

Is your class working on inequalities? If so, you might be interested in this video. This well-made video shows how to solve an inequality by dividing by a positive number. An instructor details each step, writing out her work as she...

Cruise ships offer many engaging opportunities for real-world math adventures. These large, floating cities use resources with numbers into the thousands place. Young mathematicians are asked to calculate numerical information...

Most adults remember learning about the Pythagorean theorem, but they don't all remember how to use it. The emphasis here is on developing an intuitive understanding of how and when to use the theorem. Young mathematicians explore...

Is your class working on inequalities? If so, you might be interested in this video. This well-made video shows how to solve an inequality by dividing by a positive number. An instructor details each step, writing out her work as she...

See how well your mathematicians know their fractions with a challenging instructional activity full of different problems. It's all there with adding, subtracting, multiplying, and division. They will be proficient with order of...

What goes into accounting the United States budget deficits and its net operating costs? How do shifts in the economy affect government spending? How is increasing interest projected to affect our federal debt in the future? This video...

The 28-page resource contains cards with terms relating to multiplication from inverse operations to front-end estimation to array. Each sheet contains two cards; one with the word and one with the definition.

If you can multiply multi-digit integers, you can multiply polynomials. Learners use an area model to compare multiplying numbers to multiplying polynomials. They progress to using the distributive property. 

How many people can sit around a table? The 22nd part in a series of 36 continues the work on writing and evaluating expressions to include expressions with two operations. Pupils use models to determine an expression for the number of...

Does it ever seem like the more money you get, the more you spend? A short video lesson introduces the concept of goods and services changing hands in a circular flow pattern. Scholars analyze how businesses make money from selling goods...

In this St. Patrick's Day missing digits worksheet, pupils figure out the missing numbers in twenty-two addition, subtraction and multiplication equations.

There's a trick to solving the area of a triangle, and it involves a skill your geometers have already mastered. Help them discover the connection between finding a rectangle's area and finding a right triangle's area as they solve for...

Plants never grow at the same rate, and that is the antithesis for this word problem involving multiplication of fractions. On the worksheet, Raul notices that Pablo's seedlings are 1 1/2 times as tall, and Celina's seedlings are 3/4 as...

You can't tell by the title, but this is a functional periodic table of elements. Incorporating bright colors, lucid text, and easily operated features, this application serves as a valuable reference tool for your chemistry class.

Practice using conditional if statements, Boolean expressions, and Boolean operators by programming a user-selected button. This activity guides by using a small program that needs some modifications to work correctly.