CK-12 Foundation
Additive and Multiplicative Rules for Probability: Red Dress? Blue Dress? Both!
The sum of the parts is greater than the whole. An interactive uses a Venn-like model to show the percentage of females from a survey that have a blue dress, a red dress, or both. The pupils determine the numbers in each category...
Mathed Up!
Changing the Subject of a Formula
What to do with more than one variable? Part of a larger series, the video shows how to solve a formula for another variable. Pupils solve equations with more than one variable for a given variable of interest. Problems include linear,...
K12 Reader
Spelling Rules: Add S to Nouns to Make Them Plural
Would you like more than one cat? Or more than one prize? Learn how to make singular nouns plural by adding an -s to the end of each word.
Illustrative Mathematics
Using Lengths to Represent Equality
Match the length in more than one way. Pupils work in pairs to create equal lengths using different combinations of rods. The quick activity allows learners to develop a physical understanding of equality and realize there is more than...
Council for Economic Education
The Economics of Income: If You’re So Smart, Why Aren't You Rich?
If basketball players make more than teachers, why shouldn't learners all aspire to play in the NBA? Unraveling the cost and benefits of education and future economic success can be tricky. Economic data, real-life cases, and some...
Curated OER
The Earth's Atmosphere and Temperature
Students describe and compare the layers of the atmosphere. They explain how to measure the temperature of the atmosphere and discover what causes the atmosphere to heat up in some places more than in others.
Curated OER
Pregnancy, Day 1: The Developing Baby
Twenty-six pages of good information about pregnancy. Pictures and descriptions describe the moment the sperm and egg unite, and there are worksheets that students can complete. This is a pretty comprehensive lesson for one day. It might...
Curated OER
Understanding Idioms Is a Piece of Cake
Interpreting idioms is a piece of cake! In groups, learners discuss the meaning of some common English idioms and choose 10 to use in sentences. Then, they illustrate the silly, literal meanings of those idioms and can engage in a fun...
Curated OER
Water Quality and Watersheds: A GIS Investigation
Requiring more than one class period, this resource takes earth science learners on a journey through a watershed. Using ArcGIS Explorer, an online geographic information system, they view maps of watersheds and surrounding landscapes....
Texas Instruments
Factoring and Solving Quadratic Binomials
Here is a TI-Navigator™ activity that allows students to review the concept of factoring and solving quadratic binomials, including a connection to graphical solutions. They enter a number such as -2 using the minus key and not the...
Curated OER
What's a Vampire's Favorite Sport - Addition
In this addition worksheet, students will solve 41 addition problems with sums less than ten. Students will then match a letter associated with each number and use this to make a word and solve riddles with a Halloween theme.
Pingry School
The Water Lab – Spreadsheet Simulation
More than 70 percent of people and 90 percent of businesses use spreadsheets regularly. While many courses overlook the important skill, the simple water lab focuses on entering spreadsheet data, formatting it, and printing plots based...
Curated OER
Math-Literature Connection: Counting with Jack the Builder
Connect literature (Jack the Builder) with mathematical concepts. In a series of computation, geometry and number sense activities, pupils count on to add, count back to subtract, build cylinders, cones, and rectangular prisms, and name...
Curated OER
Division for Third Graders
Explore division and measurement relationships with your math class. They will work in pairs to measure and cut a piece of cord 100 centimeters or longer. Then they cut off equal pieces of less than 10 centimeters until all the cord is...
Curated OER
A Test-Tube Study of Redox Reactions
Six different redox reactions are set up in the lab by your chemistry class. Inquisitors methodically test each one and eventually order them according to oxidizing strength. This is a neat way to have the learners perform more than one...
Curated OER
Bouncing Ball : Function Families
A bouncing ball serves as more than entertainment when learning to apply quadratic functions to real-world events. This is the second of a two-part lesson plan, which can also be accessed from the website. The instructions say to measure...