Mathematics explains the workings of the universe, from particle physics to engineering and economics. Math is even closely related to music, and their common ground has something to do with a Rubik's Cube puzzle. Michael Staff explains...

This animated video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to use fractions to compare the spring weight of a hedgehog with its weight just before hibernation....

This video illustrates a visual model for solving a word problem involving the division of fractions. The problem asks students to determine the length of a losing frog's jump in a jumping frog contest based on a comparison with the...

Here is a site that clearly and thoroughly explains removing grouping symbols like parentheses, braces, and brackets. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this...

This Math Forum resource poses a weekly problem to students. If desired, students may submit their answers. Solutions are published the next week.

Ari has collected data on how much her classmates study each week and how well they did on their recent math test. Here is part of the data showing the percentage of each group (divided according to hours spent studying) who got B's or...

Detailed math tutorial features notes and examples that illustrate how to factor polynomials. It discusses factoring out the greatest common factor, factoring by grouping, factoring quadratics, and factoring polynomials with degree...

Adult learners are a challenging group to reach when teaching basic mathematical skills. This guide presents ideas and worksheets for teaching them how to solve word problems.

A stem and leaf plot is a graphical representation for investigating variation. You will convert an ordered stem and leaf display grouped by tens into an ordered display grouped by fives.

The big idea of this lesson is that three (or more) numbers can be grouped together and added. The order of this grouping doesn't matter.

A geometry lesson plan that examines the history and structure of ancient pyramids and engages students in constructing pyramid models. A comprehensive lesson plan that considers students with diverse learning styles. Math concepts...

Duke University has established the Center for Inquiry-Based Learning. It serves to enhance math and science lessons. Click on Resources for good examples of Inquiry-based lesson plans.

As a part of the online collaborative unit, Westward Ho!, students will work in cooperative groups of 4-5 students to decide what items they need to take on the Oregon Trail, determine the cost of the items, and complete a ledger to...

Third graders develop their understanding of multiplication by grouping objects into equal groups to model the factors and products.

Grouping by tens reinforces the understanding of place value

Find material to use when planning instruction on exponential growth and decay. A lesson offers several examples, graphs, and explanations, and there are two practice exercises and a group activity for testing and applying concepts learned.

An introduction to the way the ancient Egyptians wrote fractions, along with a more sophisticated look at the process of converting modern fractions to Egyptian form. Contains a very informative and interesting group of related links,...

Rock out to a musical demonstration of math involved in constructing rhythms from groups of beats in this video from KQED. In the accompanying classroom activity, students consider how the note durations comprising a measure in 3/4 time...

A histogram displays numerical data by grouping data into "bins" of equal width. Each bin is plotted as a bar whose height corresponds to how many data points are in that bin.

Introducing a card game that your students can play in small groups to develop their addition skills. This video focuses on addition of positive and negative numbers and briefly touches on subtraction of integers.

Compare a division problem with whole numbers to a similar problem about dividing fractions in this interactive from KET. Students watch a video of a peer talking about a fraction problem that involves equal groups, with the number of...

Ahoy Matey! Join PBS Kids characters Peg + Cat to explore fair sharing and solve math problems to help a group of cranky pirates divide things fairly. Children will separate sets of objects into equal groups and divide single objects...

Members of the seventh grade math group have nominated a member of their group for class president. Every student in seventh grade will cast a vote. There are only 2 candidates in the race, so a candidate must receive at least 50% of the...

Members of the seventh grade math group have nominated a member of their group for class president. Every student in seventh grade will cast a vote. There are only 2 candidates in the race, so a candidate must receive at least 50 percent...