There are four terms in this polynomial. Try to factor it by grouping the terms. Confused? Try to get four terms into the product of two binomials? Still confused? Watch the instructor as she goes through the steps to group and regroup...

An example of factoring by grouping is shown in this video. We look at a polynomial with six terms, by grouping the terms into two trinomials with common factors. Then we factor a couple times so that we factor completely.

The strong connections between math and music are explored in this short video that uses group theory to visualize musical chords. Makes you wonder what Arthur Rubinstein would have thought of all this.

Determine medians within a group. Given data represented as a frequency table of grouped data, the video demonstrates finding an estimation for the median. After finding the group where the median resides, the presenter uses a formula to...

Can scholars determine the mean if the frequency is for a range? By using a method similar to finding the mean from a frequency table, the video shows how to find an estimated mean for grouped data. It uses the midpoint of the interval...

Quick, nurse, grab a calculator! A role-playing activity has groups measure vitals, such as heart rate, blood pressure, weight, etc. After viewing a video on how nurses use math in the workplace, scholars apply knowledge of rates and...

Birds of a feather flock together, so it's easy to estimate their number. Pupils watch an installment of a larger Real-Life Math series in which a zookeeper explains how she uses math to estimate the number of birds. They then try out...

Get healthy using math (although exercise helps, too!). Future consumers analyze a set of nutritional labels to compare caloric and nutrition information for two cereal brands. After watching a video of a health educator explaining how...

What's that sound? Transpose music proportionally using a ukulele. A ukulele artist explains how math is beneficial in transposing songs written in one key to another. The video demonstrates that transposing keeps the ratio between the...

This modern animation and discussion of the ancient secrets of Pascal's triangle manages to be topical, engaging, and mathematically deep all at the same time. A great introduction to the power of number theory across multiple math...

Data is just waiting for scholars to analyze. By viewing a video of a data analyst explaining his job and the math that surrounds it, scholars begin a lesson on data collection and analysis. Groups develop questions for a poll on teenage...

The lesson is sure to get scholars' blood pumping. An athletic trainer highlights some uses of math in athletic training in a heart-pumping video. After watching it, pupils get together in groups to measure their resting heart rates and...

Here is a complete and clear demonstration of the process needed to factor a trinomial with a non-1 leading coefficient. Sal uses various colors and provides working examples while he factors the simple trinomial. This video would be...

Useful as a classroom resource, a computer lab assignment, or even a homework supplement, this video shows viewers some more techniques for factoring polynomials. Once they have mastered the art of factoring, the rest of algebra will...

Connect your classes understanding of factoring trinomials to the process of factoring by grouping with a video that shows pupils how to factor a polynomial with four terms by grouping the terms in pairs and finding the GCF....

Can you use math and logic to beat the bad guys? You can in space! Take an intergalactic trip into a seedy and speedy crime syndicate with the Seven Planets Riddle, which challenges two interstellar police officers to use deductive...

Tip—start with the inner most nested grouping symbol. The resource provides an explanation of the conventional method in nesting grouping symbols and using parentheses, brackets, and braces. The video provides two examples, one involving...

Adding double-digit numbers can seem difficult for some students. But this Khan Academy video makes this process clear in a developmentally sound way. Students watch as 'Sal' adds the number 46 to 43. He references each number by its...

Sarah Jessica Parker helps Elmo understand the concept of a pair. She uses shoes, mittens, and ice skates to define a pair. This video could be used before a math lesson to define this concept.

Using a step-by-step approach, Sal from Kahn Academy visually describes what a group of 10, 100, and 1,000 means. It explores the value of numbers less than 10,000. The example is easy to understand. He puts marbles in a can, and the...

As part of a series on numbers less than 10,000, a thorough presentation demonstrates how to visualize numbers in groups of a thousand. The instructor then describes how to read and write numbers less than 10,000.

Sometimes you'll need to solve an equation with multiple variables on each side. This step-by-step tutorial will show you how to set your equation to 0, factor out the GCF, simplify, write your answers as a set, then plug and chug to...

How do you know if three given lengths of lines can form a triangle? This lesson will give you two rules to help you determine if you can make a triangle.

Happy birthday to you — and to you! A festive video on probability examines the likelihood of two people in a group sharing a birthday, based on the size of the group.