New ReviewBuild on techies' knowledge of engineering design. A set of STEM lessons for grades one through six provides instructors with suggestions for engineering instruction. The activities require pupils to design and build structures, such as...

New ReviewA six-question interactive takes mathematicians to Lollipop Land where they manipulate lollipop trees to make equivalent ratios.  Question types include multiple-choice, true or false, and a discussion. 

New ReviewRatios with smaller numbers are so much easier to manipulate. A short video describes how to simplify ratios by comparing the process to simplifying fractions. It works through a real-world example that requires writing and simplifying a...

What would Rudolph ask for in his ideal home? Pupils analyze the characteristics of the reindeer to create their perfect zoo habitats. A STEM lesson focuses on the design of the habitat while factoring constraints such as space, diet,...

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...

Only in math problems do people buy 18 cans of tennis balls and no one wonders why. Scholars solve for the number of total tennis balls given the ratio of balls per can. This and other ratio word problems in a PowerPoint from Grade 6...

Which team has the advantage? An imaginary story about a game of dodgeball in the lost city of Atlantis demonstrates the ways to compare two quantities. One coach compares the ratios of the numbers of players on each team while the other...

Scale the challenge of learning about ratios and scales. Young mathematicians learn to incorporate fractional measurements when considering scales and scale factors. They use an interactive to investigate the concept and critically...

There's no equivalent to this interactive. To learn about equivalent ratios, scholars first watch a video of a pupil trying to find an equivalent ratio. They consider whether the pupil is correct and explain their reasoning. Then, they...

A super bear is a whole lot of gummy bear. Scholars hone their estimation skills by completing an activity. Given the masses of a mini gummy bear and a regular gummy bear, they must determine the number of each needed to have the same...

Serve up a rate of percents. The Math at the Core resource investigates the percent of daily value of sodium and saturated fats in different foods. Pupils determine the number of serving sizes they eat of popular snack foods and...

And the beat goes on. The installment of the Math at the Core: Ratios series introduces time signatures in music. A musician shows the relationship between different types of musical beats. Working in pairs, classmates create beat...

Use unit rates to find the number of parts needed to produce a given number of units. A production scheduler shares the different ways schedulers use math to ensure the required amount of parts are available to manufacture air...

The star of the show is ratios. The informative resource explains how to transpose music using ratios. Individuals transpose the song "Twinkle, Twinkle" in the activity by applying their ratio skills. The activity challenges class...

What's that sound? Transpose music proportionally using a ukulele. A ukulele artist explains how math is beneficial in transposing songs written in one key to another. The video demonstrates that transposing keeps the ratio between the...

Using an installment from the Math at the Core series, pupils learn about Kapa cloth, which is made from bark. The video shows how much cloth one cup of bark makes. Then classmates, working in pairs, determine the number of cups of bark...

Use math to become pitch perfect. Music incorporates various aspects of mathematics. A musician/composer demonstrates the inverse relationship between the length of string and the ratio of the notes in a delightful video. The musician...

Is there time? Fencers need to make mental calculations within a match. The Math at the Core MS: Ratios resource points out that fencers calculate the ratio of touches per time left to help develop strategies to win. The competitors also...

Defeat an opponent by creating the potion in the correct ratio. The interactive game requires players to create potions using given recipes to defeat their opponents. The Math at the Core MS: Ratios activity allows class members to...

Conversion solves a royal blunder. Using an animated video, the resource explores the importance of being able to convert measurements. Knowing the ratio of two measurements allows for the conversion between two measurement units. Pupils...

Let the beat go on. A resource in the Math at the Core MS: Ratios series points out that fractions are integral to musical rhythms. The activity starts with a video to motivate the class. Classmates then work in pairs to create rhythms...

Out lunge the opponent. Fencing uses math in determining distances between opponents. An installment of the Math at the Core: Ratios series shows how to use variables to write an expression to show the distance a fencer must cover to...

Does it balance? An activity provides an opportunity to investigate the mathematics involved in making a balanced mobile. Using a stop-action video, the resource provides the formula needed to create a mobile that balances. The Math at...

Strive to determine your stride. Scholars first view an informative video on the Kentucky Horse Park and the 28-feet stride of the Man o' War. They then work together in groups to find the length of their own strides by using the number...