National Council of Teachers of Mathematics
Nctm: Figure This: Keeping Cool
Is it better to by block ice or crushed ice? Use your logical reasoning and measurement skills to solve this challenge that compares surface area of block ice and the same block cut into three cubes. A one page activity from the NCTM...
Sophia Learning
Sophia: Supporting Details Explained
This slideshow focuses on supporting details; it discusses their purpose, the audience, and the point to be made. It lists the five most common types of supporting details: facts, statistics, opinions, examples, and personal observations...
Sophia Learning
Sophia: Supporting Details
This tutorial focuses on supporting details using a video of a paragraph from a book showing the topic sentence and two strong, reliable, supporting details. This is followed by a slideshow that stresses the need for variety in the types...
Read Works
Read Works: Fact and Opinion Kindergarten Unit: Opinion
[Free Registration/Login Required] A lesson using Animal Touch by Kirsten Hall to teach students to form opinions based on information found within informational texts. Includes ideas for teaching, guided practice, and independent...
University of Cambridge
University of Cambridge: Nrich: Hand Span
Use this one page website to practice measuring things using nonstandard units of measurement. There is a solutions page that is right at the website for more information.
University of Cambridge
University of Cambridge: Nrich: A Flying Holiday
Some may think this problem is for the birds but you will need to use your problem solving skills to come up with a reasonable answer. Then check this one page website for the solution.
University of Cambridge
University of Cambridge: Nrich: Dining Ducks
This problem will quack you up. On this one page website use those problem solving skills to check the reasonableness of your answer. The solution is available right at the website.
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...
University of Cambridge
University of Cambridge: Nrich: Game Khun Phaen Escapes to Freedom
This interactive game is based on a famous character in a Thai legend. See if you can figure out how he escaped! You will have to use your problem solving and spatial relationship skills to figure out this one.
University of Cambridge
University of Cambridge: Nrich: A Rod and a Pole
At this one page website work on this challenge using your very best problem solving skills to find a reasonable answer. Actually, there are a number of solutions. When you find yours check the website to see the solutions already listed.
University of Cambridge
University of Cambridge: Nrich: Magic Triangle
Use your problems solving skills to make everything add up correctly for this challenge. The solution is right at this one page website.
University of Cambridge
University of Cambridge: Nrich: Butterfly Flowers
This one page website offers a challenge that will require you to use your problem solving skills. There are teacher tips and the solution available to help.
University of Cambridge
University of Cambridge: Nrich: Magic Circles
Use your problem solving skills to figure out this challenge. A number of solutions are available right at this one page website.
University of Cambridge
University of Cambridge: Nrich: Number Juggle
Use those problem solving skills to find a solution to this triangle problem. When you have your solution you can check it right on this one page website.
University of Cambridge
University of Cambridge: Nrich: Octa Space
At this one page web site see if you can solve this puzzle involving the edges of an octahedron. You will definitely need to use your problem solving and spatial reasoning skills for this!
University of Cambridge
University of Cambridge: Nrich: Games the Triangle Game
Use this game to improve your knowledge and understanding of triangles and naming vertices. Just read and follow the instructions! [Requires Java.]
Philosophy Pages
Philosophy Pages: Categorical Propositions
Introduces the method of categorical logic, as used in the deductive reasoning formalized by Aristotle. Author defines important terms very clearly and includes several good examples. A good place to start reading about logic.
PBS
Pbs Learning Media: Think Math
Think Math offers a collection of 43 KET-produced resources from Math at the Core: Middle School, including 17 Scale City videos and interactives about proportional reasoning, 14 Wild Fractions animations and games that feature visual...
ABCya
Ab Cya: 2048
2048 is a challenging number puzzle for kids and grown ups. The object is to join the numbers to get the 2048 tile. Use your arrow keys to move tiles. When two tiles with the same number touch, they merge into one!
ABCya
Ab Cya: Daisy's Plumber Puzzle
Daisy needs your help getting water to all the snoozing flowers! Use your plumber skills to rearrange the pipes so that the water flows from the faucet to the thirsty flower. The whole family will have fun with this puzzle game!
ABCya
Ab Cya: Puzzle Drops
Puzzle Drops is a fun match-3 puzzle game that the whole family will enjoy! Click/tap to rotate the puzzle piece and then drag it to the appropriate place on the game board. You'll have to use some strategy to reach the goal in each level.
ABCya
Ab Cya: Pixo Cross
Pixo Cross is an addicting puzzle game for the whole family! Your goal is to reveal the hidden picture in each level. Simply, click to fill the cells in the level. There are numbers placed along the outside of the puzzle that tells you...
ABCya
Ab Cya: Salazar the Alchemist
Salazar the Alchemist needs your help creating an ancient powerful artifact! Combine three of the same elements create a new one. Use power ups and your knowledge of magical mystical elements to create this ancient artifact!
ABCya
Ab Cya: Jelly Slice
Jelly Slice is a unique brain and puzzle game in which you use your fingers or mouse to slice the jelly and collect the stars through challenging levels. There is only one rule: Slice the jelly so that each slice contains only 1 star....