National Council of Teachers of Mathematics
Nctm: Figure This: Math Challenges for Families
Students, teachers, and parents alike will enjoy this challenging math site. It contains a clever brain teaser section plus creative problems related to algebra, geometry, measurement, numbers, statistics, and probability. A Spanish...
Other
Center School District: Everyday Math Resources
Everyday Math Resources for 5th grade is an excellent resource for both students and teachers. Twelve math strands are linked to activities and interactive games that support the learning outcomes. Click on links at the top to access...
Sophia Learning
Sophia: Finding Area With Squares: Lesson 4
Step by step, this video lesson [4:34] will show you how to add up the number of squares that cover an object in order to find the area of a figure. It is 4 of 7 in the series titled "Finding Area with Squares."...
United Nations
Unesco: Math Games (In Arabic)
This site offers games and lessons that teach basic math concepts such as area and volume, number patterns, time, etc. Games use familiar tasks such as shopping to reinforce math concepts. While the title of each page includes an English...
Math Is Fun
Math Is Fun: Estimation Games
Students practice the mathematics skill of estimation. The learning games examine how to use estimation with numbers, length, angles, and area.
Sophia Learning
Sophia: Finding Area With Squares: Lesson 3
Step by step, this video lesson [2:41] will show you how to add up the number of squares that cover an object in order to find the area of a figure. It is 3 of 7 in the series titled "Finding Area with Squares."...
Math Graphs
Houghton Mifflin: Math Graphs: Area of a Region [Pdf]
Students calculate the area of a region using the Midpoint Rule. The resource consists of an enlarged printable version of a graph available in PDF format.
Wolfram Research
Wolfram Math World: Trapezoidal Rule
This site from MathWorld.com give a formula for a two point trapezoidal approximation for the area under a curve.
Other
Mr. Pitonyak's Pyramid Puzzle
Students estimate the cost of building an Egyptian pyramid with modern materials and ancient building methods in this math project.
Illustrative Mathematics
Illustrative Mathematics: G Mg How Many Leaves on a Tree? (Version 2)
In this task, students must estimate the number of leaves on a large tree, taking into account various complex factors such as the area shaded by the tree, the area of irregularly shaped leaves, the uneven distribution of leaves, the...
PBS
Pbs Mathline Lesson Plan: Sidewalk Capers [Pdf]
The objective of this lesson is for learners to, "explore spatial relationships by determining the area of various shapes and creating tessellation patterns." Using a variety of hands-on activities, students apply concepts of geometry,...
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.
National Council of Teachers of Mathematics
Nctm: Figure This: Chocolate (Pdf)
Here's a delicious math challenge for chocolate lovers! Use your estimation and measurement skills to discover which irregular shaped, chocolate covered cookie has the largest surface area. A one-page activity from the NCTM Math...
Illustrative Mathematics
Illustrative Mathematics: G Mg How Many Leaves on a Tree?
This is a mathematical modeling task aimed at making a reasonable estimate for something which is too large to count accurately, the number of leaves on a tree, taking into account the tree size and the density of the leaves. Aligns with...
PBS
Pbs Kids: Peg + Cat: Games: Bubble Bath
Help Pet and Cat fill the bathtub with water by picking a container and pouring water into the tub. You will have to estimate how many containers it will take to fill the tub with water and then see if you are correct.