Other
Maths Net Interactive: Interactive Geometry: A Glossary
Click on the appropriate word to view a small graphic depicting the term, or click to the crossword puzzle version of thisinteractive glossary.
Homeschool Math
Homeschool Math: Divisibility Rules
This is a complete lesson about the concept of divisibility and common divisibility rules. It briefly reviews the concepts of factor, divisor, and a number being divisible by another. Then, the "easy" divisibility rules by 2, 5, 10, 100,...
Homeschool Math
Homeschool Math: Comparing Fractions
Video lesson [8:41] explains various methods for comparing fractions. It includes word problems and a puzzle for practice.
Cut the Knot
Cut the Knot: 3 Glasses Puzzle
Challenge students to a well-known riddle involving three different-sized glasses, some water, and a goal of a certain amount to be measured out. At this site, students can actually "pour" the water back and forth to solve the problem.
National Council of Teachers of Mathematics
The Math Forum: Polyhedra in the Classroom
Lesson plans for many student activities which introduce the concept of polyhedra into the classroom. Some activities can be accomplished by hand with paper, pencils, and scissors, but the unit works best if the students can regularly...
Quia
Quia: Evaluating Algebraic Expression
This interactive game is similar to Concentration. Students must evaluate the expression in the puzzle for the given value and match it with the correct answer.
PBS
Pbs Learning Media: Solving an Equation for a Missing Value
The CyberSquad solves a number puzzle to help save Motherboard in this video segment from Cyberchase.
PBS
Pbs Learning Media: Solving the Sphinx's Fraction Problem
In this Cyberchase video segment, Wicked and Digit solve a fraction puzzle in order to move on in their quest to save the CyberSquad.
Oswego City School District
Regents Exam Prep Center: Order of Operations and Evaluating Expressions
Please excuse my dear Aunt Sally. This sentence takes on greater meaning when learners realize it will assist them in remembering the all-important order of mathematical operations. A lesson plan, several interactive practice pages, and...
ABCya
Ab Cya: Zero Sum
Welcome to Zero Sum, a fun math-puzzle game! Drag the tiles over the target numbers to reduce their values to zero. Be careful to make sure that none of the target numbers get reduced below zero. If you get stuck, use the reset button to...
ABCya
Ab Cya: Mystic Numbers
Enter the Mystical Temple and discover hidden treasure by placing the number orbs in the correct spots on the pedestal. Great addition skills are essential in this exciting math puzzle game. Give it a try!
Discovery Education
Discovery Education: Puzzlemaker
Use this free tool to create various kinds of puzzles like wordsearches, criss cross, math squares, mazes, etc. Select the puzzle type, follow the simple direction, enter your words, and print out the finished puzzle with an answer key.
Other
Juegos, Acertijos, Y Recreaciones Matematicas
In Spanish. A variety of logic problems, including puzzles and word problems with links to the answers. An excellent site to engage Spanish speaking students.
abcteach
Abcteach: Earth Day Activities
[Free Registration/Login Required] How can you treat the earth with more respect? Check out this resource featuring links to elementary activities to celebrate Earth Day. You will find word searches, crossword puzzles, reading...
TED Talks
Ted: Ted Ed: Group Theory 101: How to Play a Rubik's Cube Like a Piano
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...
ABCya
Ab Cya: Shapes: Geometry Game
Shapes is a fun educational activity to help children learn basic properties of simple geometric figures. Children will practice looking for differences and similarities between shapes to complete puzzles. Shapes! gets progressively more...
National Council of Teachers of Mathematics
Nctm: Figure This: Number Tricks
Can you break the magic number code? Test your algebra aptitude in this challenge that explores number generalizations, symbols, and equations. Discover how algebraic procedures are used in everyday situations in this one page activity...
Other
Groundhog.org: The Official Site
This site from Groundhog.org provides activities for all ages to celebrate the dubious but delightful holiday of Groundhog Day! Teachers will find some great activities for the younger students like coloring pages, math activities, word...
Other
Groundhog.org: The Official Site
This site from Groundhog.org provides activities for all ages to celebrate the dubious but delightful holiday of Groundhog Day! Teachers will find some great activities for the younger students like coloring pages, math activities, word...
PBS
Peep and the Big Wide World: Games and Videos
This site provides science and math games and videos for Pre-K through early elementary students.
TED Talks
Ted: Ted Ed: Can You Solve the Temple Riddle?
Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The walls begin to shake. The giant sandglass begins flowing with less than an...
Other
Tessellation World of Makoto Nakamura
There's more to do here than just look at Escher-like tessellations. You can watch animated tessellations and put together puzzles.
PBS
Pbs Learning Media: The Puzzle of the Amulet of Amagansett
In this video segment from Cyberchase, Wicked and Digit use what they know about fractions to figure out how many jewels are missing from the Amulet of Amagansett.
Enchanted Learning
Enchanted Learning: All About Whales
This site provides a great deal of information about whales.
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