Young scholars complete an experiment using balloons to help them examine the concept of static electricity. They discover how engineers use this information to create better air filters for homes. They describe how to charge an...

Students work together to discover the concept of echolocation. They examine dolphins and their behaviors. They discuss how humans could use this information to help them in their everyday lives as well.

Students examine the effects of bycatching on water environments. They discover how echolocation works. They participate in a simulation of the process to use it while walking blindfolded.

This site has two lesson plans are presented by Marilyn Burns and associates that use children's literature to help assess math sense. One lesson plan is for use with primary students while the other is for use with intermediate students.

[Free Registration/Login Required] A collection of teacher created activities that focus on basic addition practice. Includes frog counters that can be printed and laminated, a dot-to-dot activity, and ready-to-use math worksheets that...

Explore primes, prime factors, and composites using this collection of worksheets. Lots of detailed examples, interesting math facts, and colorful visuals. Acrobat Reader required.

An engaging lesson used to review math concepts and facts. Students are certain to "Stay alert," in this card game where each solution is related to the next solution. Sample questions provided. Great problem solving and skill building...

At this lesson you can learn, practice, play a game and explore all about even and odd numbers. There are lots of resources to use to learn about even and odd numbers.

At this lesson you can learn, practice, play a game and explore counting even numbers by 2. There are lots of resources to use to learn about even and odd numbers at this website.

In this lesson plan, 4th graders will investigate and discuss the familiarity with factors and multiples to gain a deeper understanding. Downloadable printables are included.

This animated video explores the basic unit of one and its different meanings depending on place value. [3:55]

This interactive activity has students practice number bonds to 10, 20, and 100. In addition to the online activity, there are teacher lesson plans and an online quiz on the topic.

Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...

Learners explore connections between addition, subtraction, and multiplication. In addition, students review place value and learn about the distributive law. The lesson plan includes an overview and a lesson toolkit.

Simulation where learners apply mathematics and economics concepts in the lemonade business. Learners set up a virtual lemonade stand and must determine production costs, product variables, and profits. Students record data collected on...

Are you struggling with comparing fractions? Then try the fraction inequality calculator. Simply key in your two fractions, press the calculate button, and in seconds youll have an answer. The perfect tool for algebra students who need...

Math and science are uncovered when we break down the numbers in a year. Build you number sense and science knowledge in this lesson that focuses on the relationships of numbers in a calendar year. Test your knowledge with the...

Multiplication Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media for the elementary grades.

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...

Students investigate the concept of a number as a quantity. The lesson plan includes an overview and a lesson toolkit.

The activity allows students to review many of the number theory concepts. Students will pick a composite number write verbal expressions about the number, find the factors, prime factorization, list multiples, draw a cartoon character...

You'll find an explanation of place value in expanded form in this lesson. There is also an interesting game that helps to show place value.

Get an overview of the subtraction process in this brief lesson that introduces key concepts, vocabulary, and symbols. Links to related, interactive practice are also available in this lesson.

Get the facts on how to subtract more than two values in this short subtraction lesson. This lesson offers step-by-step examples, suggested strategies and shortcuts, and links to related interactive games. Both games are fast-paced and...