University of Colorado
University of Colorado: Discrete Mathematics Project: Venn Diagram Activity
A lesson plan on the use of Venn diagrams for problem-solving.
National Council of Teachers of Mathematics
The Math Forum: Height to Weight Ratio
A student asks Dr. Math, "If I have a friend that weighs 155 pounds and is five feet, four inches tall, what is his height-to-weight ratio?" Find out how Dr. Math solves this problem and get a better understanding of the concept of ratio.
University of Cambridge
University of Cambridge: Nrich: Biscuit Cookie Decorations
Solve this problem keeping in mind that cookies are called biscuits in England. Solution included.
University of Cambridge
University of Cambridge: Nrich: Seven Sticks
On this one page website sharpen your logic, triangle properties, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
Quia
Quia: Nature of Science Scientific Method Concentration
Play a game of concentration by matching terms used in the scientific method to their proper description.
Quia
Quia: Nature of Science Scientific Method Flashcards
Review the nature of science with on-line flash cards.
Michigan Reach Out
Michigan Reach Out: Creating a Salad Dressing
This site is provided for by Michigan Reach Out! Teach the scientific method with salad dressing! Young scholars understand the scientific process and how it helps scientists by making salad dressing.
University of Cambridge
University of Cambridge: Nrich: Bunny Hop
You will want to "hop" right on this problem and see if you can find a solution at this one page website. Then you can check it right there.
University of Cambridge
University of Cambridge: Nrich: Calendar Patterns
On this one page website sharpen your logic and pattern recognition skills while working on this calendar challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Count the Trapeziums (Trapezoids)
The challenge at this one page website, is to see how many trapezoids (British-trapeziums) you can find in the figure. When you have your results, you can easily check it right at the website.
Help Algebra
Help algebra.com: Problem Solving Strategies
The steps for solving word problems are presented here along with suggestions of how to carry out each step. Learn how to understand, plan, write equations, solve and check each time you work a word problem.
ClassFlow
Class Flow: Solving Problems
[Free Registration/Login Required] The teachers will use this lesson plan to review problem solving. Students will apply problem solving skills to solve a variety of word and thinking problems.
ClassFlow
Class Flow: Solving Problems
[Free Registration/Login Required] Students will use this lesson plan flipchart to review problem solving. Students will apply problem solving skills to solve a variety of word and thinking problems.
National Council of Teachers of Mathematics
The Math Forum: The Cereal Box Problem
A cereal company is offering six different prizes in their boxes. How many boxes would you expect to have to purchase in order to collect all six prizes? Known as the Cereal Box Problem, this question is explored here. A solution is...
National Council of Teachers of Mathematics
Nctm: Figure This: Tan, Don't Burn
How about a math challenge for a sunny day at the beach? Apply your problem solving, number sense, and logical reasoning skills to find out how long it would take Helix to get sunburned using SPF 10 lotion. Discover why understanding...
National Council of Teachers of Mathematics
Nctm: Figure This: Matching Birth Months
Here's a interesting challenge! Out of six people in a room, what is the probability that everyone was born in a different month? An investigation that explores the probability of an event occurring. Discover how this skill is used in...
National Council of Teachers of Mathematics
Nctm: Figure This: Envelopes
Explore tessellations with real world applications in this activity from the NCTM Math Challenges for Families series. Figure out what shape you would use to create a legal envelope from a single sheet of paper. Then discover how...
National Council of Teachers of Mathematics
Nctm: Figure This: Drip Drops
Figure out how much water you waste in a week in this exploration using your problem solving, measurement, and estimation skills. This activity is from the NCTM Math Challenges for Families series.
National Council of Teachers of Mathematics
Nctm: Figure This: How Many Fish in the Pond?
Can you figure out how many fish are in a pond? Use the statistical method of capture-recapture and estimation to solve this math challenge. An investigation from the NCTM Math Challenges for Families series. Discover how this skill can...
National Council of Teachers of Mathematics
Nctm: Figure This: What's Missing?
Can you find the missing pattern in the "sona?" Explore missing patterns and growing patterns in this NCTM Math Challenges for Families activity. Discover how archaeologist and anthropologist use these mathematical patterns to learn...
National Council of Teachers of Mathematics
Nctm: Figure This: How Much Time Do Teens Spend on the Job?
Try this math challenge where you investigate the average number of hours teen actually spend working. Apply your problem solving, number sense, and computation skills in this one page activity from the NCTM Math Challenges for Families...
National Council of Teachers of Mathematics
Nctm: Figure This: Table for 19 (Pdf)
The waiters at Polygon's Restaurant need your help. See if you can use your problem solving and patterning skills to help them solve this math challenge. Discover how developing these skills could be useful in real life situations, in...
National Council of Teachers of Mathematics
Nctm: Figure This: Rose Bowl
A math challenge taken directly from the sports pages. Use your problem solving and data collection aptitude to find out how many different ways a Rose Bowl team could score 11 points. Try this one page activity from the NCTM Math...
National Council of Teachers of Mathematics
Nctm: Figure This: Radar Bills
Have you seen a radar bill lately? Explore number patterns, number combinations, and probability in this math challenge that examines serial numbers on U.S. bills. A one page activity from the NCTM Math Challenges for Families series.