Pre-Algebra Teacher Resources

Sal tackles pre-algebra in this series of videos, starting with the concept of negative numbers. Using a number line, he takes the viewer through different practical examples of negative numbers, such as temperature and bank accounts....

Here is an ACT practice worksheet where pupils solve pre-algebra problems in an ACT format. This packet contains a pre-algebra section with 15 problems, a pre-algebra II section with 10 problems, and one subtest with 14 problems.

This video contains additional scientific notation examples, continuing from the previous presentation. Viewers can see Sal work through several more problems using the techniques he has outlined throughout the pre-algebra video series.

Middle and high schoolers review topics covered Pre-Algebra. They solve problems questions dealing with exponents, square roots and absolute value. They use the rules of divisibility and identify prime numbers. This two-page on-line...

For this equations worksheet, students problem solve and calculate the answers to ten pre algebra equations. Students show each step of their work.

In this pre-algebra decimal learning exercise, students complete a total of 28 problems performing multiplication, division, subtraction and addition of decimals and fractions. 

Students demonstrate different algebraic equations using Borenson's Hands-On Equation materials. They work in a cooperative group to solve algebraic equations.

Converting percents to decimals, and the other way around, can be tricky. Sal shows young mathematicians how to simplify this process with two sample equations and one word problem.

Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.

Apply the concept of scientific notation to a word problem involving the rate of speed. Sal explains how to express the answer using scientific notation.

Explaining scientific notation is useful because "it allows us to write large or small numbers in ways that are easy for our brains to write down and understand." Sal proceeds to solve a few practice problems involving scientific...

Knowing mathematic terminology is vital for building a functional academic vocabulary. In this video, Sal defines number sets and the terms natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers....

This video focuses on metric unit conversion. Sal introduces the necessary prefixes before launching into several mathematical examples. His easygoing manner and explanative annotations will undoubtedly help those who get a little stuck...

Faced with a series of numbers, we need to find the following few values of the sequence. This short video shows an example of finding the following values in a sequence where we must find the pattern of adding a specific number each...

Before Sal can divide a mixed number, he has to rewrite it as an improper fraction. He explains that dividing a fraction is the same as multiplying it by its reciprocal and that you can "cancel out" numbers to make multiplying easier.

First, by demonstrating the improper ways of solving an equation (left-to-right, multiplication first), Sal shows viewers how the answer to an equation can be drastically incorrect if the order of operations is neglected. He uses several...

This video involves both positive and negative numbers. Sal explains the definition and function of exponents. This video offers several examples, ranging from simple to more complex, which are especially helpful for those who multiply...

This video will demonstrate adding mixed numbers. Sal explains that adding mixed numbers can be done by looking at the whole number separately from the fraction. Because his explanation is brief, this video would be great as a supplement...

Show your students this presentation to help them understand how to add fractions with like denominators. Sal adds 3/15 to 7/15 and then simplifies his answer. He uses drawings and multiple colors to show the actual process.

Here is a great video explaining multiplying a fraction by a whole number. Sal shows students how to put a whole number over 1 to multiply it by a fraction. He simplifies his answer and writes it as a mixed number.

Sal takes out the big guns—or, in this case, the big calculator—in this video, which takes the concept of significant figures even further. Sal shows how to multiply and divide significant figures using electronic and handwritten...

Guiding viewers through the addition and subtraction of numbers, this video includes many tips to help new learners internalize the concept of a number line. It clarifies the relationship between positive and negative numbers, including...