E-learning for Kids
E Learning for Kids: Math: Dinosaurs: Symmetry and Estimation: Mass and Symmetry
Students play learning games to explore mass and symmetry.
Wolfram Research
Wolfram Math World: Simpson'e 3/8 Rule
This MathWorld site presents a modification of Simpson's Rule called Simpson'e 3/8 Rule.
Mathematics Archives
Math Archives: Visual Calculus: Newton's Method
This site offers a tutorial on Newton's Method. Be sure to check the discussion link. The site offers the formula for finding the successive approximations of a root.
A to Z Teacher Stuff
A to Z Teacher Stuff: Estimation Station (Lesson Plan)
A hands-on lesson plan for grades K-3 on estimation using goldfish crackers. Lesson used in conjunction with an oceans unit.
PBS
Nova Online: How Many Pearls? A Weight & Volume Game
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...
Shodor Education Foundation
Shodor Interactivate
The Shodor Education Foundation has as its mission: "To advance science and math education through the use of computational science, modeling and technology." At this site, Shodor's Project Interactivate offers Java-based activities for...
Khan Academy
Khan Academy: 2 Step Word Problems
Solve two-step word problems with addition, subtraction, multiplication, and division. Some questions include estimation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Other
Nearpod: Two Step Word Problems
In this lesson plan on two-step word problems, 3rd graders learn about estimation, explore different drawings, and apply their learning to create their own word problems.
Math Graphs
Houghton Mifflin: Math Graphs: Equation of a Tangent Line 3 [Pdf]
The resource practices computing the equation of the tangent line to the graph at the given point. The problem is available in PDF format.
Khan Academy
Khan Academy: Estimating With Adding Decimals
For example, estimate 12.93 + 6.1 to be 19. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Estimating With Multiplying Decimals
Estimating with multiplying decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.