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.

Sal teaches students how to convert a temperature in Fahrenheit to its equivalent temperature in Celsius. He is explicit and very clear, which is suitable for those needing additional assistance or exposure to a particular topic.

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...

In 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. 

"Demystifying" an often mysterious problem, Sal demonstrates some tricks for considering exponents intuitively, rather than working them out each time. He first takes viewers through positive exponents and works up to negative exponents,...

Equipped with several examples from the attached module and from standardized tests, Sal takes viewers through the process of prime factorization and divisibility. He demonstrates each skill several times with many different numbers,...

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

Bring interest to your lesson on adding fractions with different signs by using this Khan Academy video. Sal employs a number line to explain how he adds multiple fractions with different signs. This resource could be used as an...

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.

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.

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...

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.

This video is excellent preparation for order of operations and linear equations. There are two videos on the distributive property of multiplication. The first one showed why distribution works. This one shows the process clearly and...

Explain an exponential number. Sal shows that five to the third power is 5x5x5 while 5x3 is 5+5+5. He demonstrates that they have very different answers. Note: This is part two in a set of videos on exponents. It may serve students best...

To subtract mixed numbers, it may be necessary to find the least common multiple to establish a common denominator. This is just what Sal does in this presentation. First, he shows how to find a common denominator and then the process...

Understanding place value is a basic mathematics skill. This Khan Academy video shows students how to write the number 14,897 in the expanded form. He explains that the 7 in the ones place is equivalent to 7x1, the 9 in the tens place is...

Many young mathematicians get slightly confused when they are introduced to the concept of exponents. This resource will ensure that they never get confused again. Sal explains, quite emphatically, that six to the eighth power is NOT the...

Viewing this Khan Academy video helps with grasping the concept of place value. Learners write the word six hundred forty-five million, five hundred eight-four thousand, four hundred sixty-two in standard form, using multiplication as a...

There are two Khan Academy videos on representing numbers as decimals, percents, and fractions. This one shows students how to represent a fraction as a decimal and a percent. Sal demonstrates the process used to convert the fraction 7/8...