Find as many words as you can in the grid.
Three different levels of problems are posted each week.
Brain Teasers, Puzzles, and Riddles
National Institute of Environmental Health Sciences offers these challenging puzzles.
A ten question trivia quiz.
Copy a 3-D figure by viewing its faces.
Can you decode these famous quotes?
Daily Jigsaw Puzzle
A new jigsaw puzzle every day.
Fill in numbers to add up to the clues.
Dare to Compare
Find out how you match up against others in this country and around the world.
Dots and Boxes
Play against the computer to connect dots with lines to create boxes.
Can you figure out the origins of these words?
Combine design elements to meet challenges.
Fill in numbers in a grid following rules for mathematical operations.
Magic Square Puzzle
Connect puzzle pieces so that all rows and columns add up to 30.
Make It Count
Match a target number using four digits.
Marbles and Rows Puzzle
Rearrange nine squares to line up marbles.
Figure out the correct sequence of pegs.
Take the test to discover which elements of your intelligence are the strongest.
A variety of puzzles is offered here.
Decode these words and symbols.
A strategy game played by flipping pieces.
Move the cars to unblock the traffic jam.
Find sets using shape, color, and fill type.
Arrange nine digits so that each appears only once
in every column, row, or block.
Fill cups with sugar by drawing paths.
The Traveler IQ Challenge
Find locations on a world map.
Place letter tiles that make up words
from a quote into a grid.
Neuronal protein image courtesy of:
Robert S. McNeil, Cain Foundation Laboratories, Baylor College of Medicine.
Teach the Children Well