Use multiplication, division, addition, or subtraction to play this math basketball game. Choose your operation and level to try to collect basketballs to use for shooting free throws. Each correct answer earns you one basketball - the...

Students will practice their one-digit addition skills with this interactive basketball game.

Great resource to practice and strengthen math skills pertaining to addition. Math worksheets are printable, may be customized, and include answer keys.

This site offers customizable math challenges to help students master their math facts. Options include skill, age, and difficulty level as well as number of problems.

Find here flashcards for addition, subtraction, multiplication, and division for printing off and coloring.

This instructional activity uses rhyming and visualization to help students quickly add number facts that make ten.

Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.

As part of the Reptiles and Amphibians exhibit at the National Zoo, this site highlights various facts and interesting information on the American Alligator. In addition to a picture, the site provides a description and information on...

This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.

Learn how to add double-digit numbers in this lesson complete with examples, rules, and vocabulary.

Sharpen your computation skills with two-digit addition, two-digit subtraction, and one-digit multiplication facts using this interactive worksheet. Learners must be familiar with multiplication facts through twelve to be successful....

Read about the effects and complications associated with the hallucinogenic drug called PCP. In addition you can read about the history of this drug as well as the potency of its doses.

Common and obvious are words used to describe the American Crow. Find out interesting facts about this bird that reveal a complex life Topics covered are: cool facts, range, habitat, food, behavior, reproduction, and conservation status....

Strategies for basic addition and multiplication are explained here and there are several practice worksheets that can be downloaded.

A very informative and fun site children can use to learn about taking care of their health. In addition to information about the body, the senses, the brain, vaccines, and healthy habits, the site provides a brief history of medicine....

This detailed site delves into cool facts, description, range, habitat, diet, behavior, reproduction and conservation status. In addition, you can listen to the sounds of this bird species.

Cool facts, range, habitat, diet, behavior, reproduction, and conservation status are the topics discussed in this detailed site. In addition, listen to the sounds of this species on this site.

Cool facts, range, habitat, food, behavior, reproduction, and conservation status are topics delved into on this detailed site. In addition, the sounds made by this species are included on this site.

This detailed site features cool facts, habitat information, behavior patterns, conservation status and more. In addition, you can listen to the sounds of the Sanderling on this site.

Did you know the the Green Heron uses bait to catch small fish? Find out more interesting facts on this authoritative site. In addition, you can listen to the sounds of this bird species.

This beautiful bird with its brilliant yellow head is hard to miss in the western wetlands of the United States. Find out about the range, habitat, behavior, reproduction, and more on this all encompassing site. In addition, you can...

Second graders demonstrate comfort with addition, but show less ease with subtraction. Repeated practice with subtraction is necessary to build fluency.

[Free Registration/Login Required] This picture-perfect picnic is all set for some subtraction practice! Count up the jelly beans to find out how many got eaten. This picture problem is a great first step to helping your child understand...

The purpose of this task is to help students develop flexible strategies for adding and subtracting within 20. Students will pick 5 number cards from pre-made cards labeled 1-10. Then, another student will pick a "target number" between...