Ratios are all around you. A fun interactive has scholars investigate ratios and proportions in different situations. These include creating bracelets with different ratios of beads, mixing paint, adjusting the length and width of a...

Help learners discover methods to estimate animal population. They will participate in a simulation of catching and tagging fish in order to estimate the fish population. They scoop and count goldfish crackers, record data, and use...

It's never too early to learn about grocery budgeting. Middle schoolers delve into the world of consumer math with a instructional activity that focuses on both healthy choices and real-world math applications. Groups work together to...

Eighth graders use goldfish crackers to simulate a capture-recapture method of data collection. They fill in a chart and determine the averages. They find the estimated population of fish and the actual population of fish based on the...

Sometimes you just want to know the cost of one apple. A fun interactive lets learners explore the unit costs of fruits, vegetables, and candy. It shows how ratios to express ratios symbolically and on a double number line.

Students examine composition of dirty bomb and its possible effects on a city, and investigate simulations of such an event; students use computational and problem solving skills to assess damage and prepare report proposing solution to...

If a random sample determines that 45% of high schoolers favor block scheduling, is it possible that the actual percentage might be 50% or 60%? In this task, learners use data from a computer-generated simulation to determine the...

Students pretend they are about to buy their first new car. They must do all the calculations necessary to estimate the cost of purchasing the car. They see that the math they learn in school really does have real-life applications.

Seventh graders simulate the capture-recapture method of population sampling using beans. In this biology lesson, 7th graders calculate the total population of beans in the bowl. They assess whether this method is reliable or not.

Students apply estimation strategies for problem-solving purposes. They become familiar with one aspect of a marine biologist's work.

Third graders imagine that they are asked to determine the number of fish in a nearby pond. To count the fish one by one, they could remove the fish from the pond and stack them to one side, or mark each fish so they would not count them...

Students simulate stars in the Milky Way Galaxy using newspaper prints. In this space science lesson, students compare the number of 'stars' on their page to familiar things. They calculate how many pages they need to have the same...