Lesson Plan
Curated OER

A thousand seconds

For Teachers 1st - 3rd
Students use seconds, minutes, and hours. They then discuss the size of a thousand. After that they read time in digital or analogue form.
Activity
AAA Math

Aaa Math: Ratios

For Students 3rd - 8th Standards
This resource describes how to calculate ratios and provides an opportunity for students to practice the skill.
Interactive
Other

Math Learning Center: Virtual Geoboard

For Students 3rd - 5th
A geoboard that can be adapted for different grade levels. Choose from three types of geoboard and eight different elastic colors. Shapes can be duplicated, rotated, flipped, and filled in. There are also drawing tools as well as a...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Determining Elapsed Time With Speed

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] For this learning module, students solve word problems where they must calculate elapsed time given he speed of an event or activity. Includes video demonstrating a...
Activity
Wyzant

Wyzant: Fraction Mixed Number Calculator

For Students 3rd - 8th
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...
Lesson Plan
AAA Math

Aaa Math: All About Percents and Ratios

For Teachers 3rd - 8th Standards
This AAA Math tutorial covers calculating percents, relationships of percents to fractions and decimals, and uses of percents.
Activity
National Council of Teachers of Mathematics

The Math Forum: Calculating Sales Tax

For Students 3rd - 8th Standards
Dr. Math is asked about calculating sales tax. A quick and easy to follow explanation of how it works using fractions, decimals, ratio, and percent.
Activity
Math Is Fun

Math Is Fun: Convert Fractions to Decimals

For Students 3rd - 8th Standards
The learning activity examines how to convert a fraction to a decimal. The resource consists of calculator steps, explanations, and examples with solutions.
Activity
Math Is Fun

Math Is Fun: Convert Fraction to Percent

For Students 3rd - 8th Standards
The learning activity examines how to convert a fraction to a percent. The resource consists of calculator steps, explanations, and examples with solutions.
Activity
Math Is Fun

Math Is Fun: Percentages

For Students 3rd - 8th
The learning activity investigates percentages. Topics examined are converting percents to decimals, converting percents to fractions, and the percentage difference. Links to additional resources and a percentage calculator are included.
Activity
National Council of Teachers of Mathematics

Nctm: Figure This: Body Mass What's Your Index? (Pdf)

For Students 3rd - 8th Standards
If you like tackling formulas, then this math challenge is for you. See if you can calculate Helix's BMI (body mass index) and find out if his health is at risk. A one page NCTM Math Challenges for Families activity that engages learners...
Interactive
Other

Math Celebrity: Decompose Fraction Calculator

For Students 3rd - 4th Standards
A simple tool where you insert a fraction into the box and see the different ways that it can be decomposed.