In this algebra activity, students solve algebraic equations by addition with negative numbers. There are 3 questions with an answer key.

Students use a balance scale with beans or seeds to estimate how many of them would weigh as much as a teddy bear counter. In this estimation lesson plan, students hold items to estimate.

Third graders focus on developing a systematic approach to problem solving while working on a problem that requires them to determine possible outcomes. They use a pegboard as a manipulative in this problem.

Second graders work on the problem with a partner. They examine what they are supposed to be doing. They share the students's solutions making sure than they are looking for patterns along the diagonals.

Pupils try to figure out the strategies to the game Noughts. Students logic must play a part in the process of the game. Pupils apply the symmetries of regular polygons. Students devise ways to critically follow a chain of reasoning.

Students give change for sums of money. They also solve subtraction problems presented in different forms. The problem Students answer takes a look at a situation from three different perspectives.

In this conditional forms worksheet, students, using the words given, complete the text with the appropriate conditional form, either past real or past unreal.

Students simulate stars in the Milky Way Galaxy using newspaper prints. In this space science lesson, students compare the number of 'stars' on their page to familiar things. They calculate how many pages they need to have the same...

Can you guess the correct number between 1 and 99 in less than 30 tries? Play this fast paced, interactive game that tests your number sense and reasoning skills. If your are a great guesser, your name will be posted.

On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.

On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.

Pancakes anyone? Students explore estimation and measurement by learning how to make pancakes. A hands-on lesson plan designed for students in grades 3-5 where students are engage in hand-on experiences involving measuring volume,...

Solve a word problem with Mike and Padhu. This video focuses on valid methods of problem solving, including guess-and-check and modeling with manipulatives.

See if you can solve this classic problem that Leonhard Euler first presented in 1736. Use the interactive section of this website to help you.

This interactive game has students apply skills in estimation, measurement, and basic addition using pearls. Students are asked to estimate the number of pearls in a treasure chest by making predictions and using number sense. The skills...

On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.

On this one page website use trial and error to find the words hidden in the spelling circles. Check your solution right at the website.

On this one page website sharpen your logic and problem solving skills while working on this challenge. The solution is available to double check your solution.

Use the clues and problem solving strategy, trial and error, to solve this problem. When you have your solution you can check it right on this one page website.

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.

Use this one page website to practice the problem solving strategy of trial and error! The solution is available right at the website.

Trial and error is just one of the problem solving strategies that you could use to solve this bucket problem. After you finish view the solution at this one page website.

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.

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.