What starts as a basic question of division and remainders quickly turns abstract in this question of related ratios and radii. The class works to surround a central coin with coins of the same and different values, then develops a...

Sometimes the most important details of an informational text aren't within the text at all. Teach your class how to read timeline with a set of activities that prompts them to find specific dates and events on the timelines, as well as...

How exactly does a crime scene investigation work? The resource, a unit on criminology, covers everything from the deductive reasoning skills needed for detectives to DNA fingerprinting, all the way to how to gather evidence and bring...

Develop an understanding of the universe. Learners answer 10 multiple choice questions about several topics in astronomy. Questions contain information about the age of the universe, gravitational attraction, galaxies, planets and comets...

Prove theorems through an analysis. Learners find the midpoint of each side of a triangle, draw the medians, and find the centroid. They then examine the location of the centroid on each median discovering there is a 1:2 relationship....

It's time to discover what your classes have learned! The final lesson in the 25-part module is an assessment that covers the Pythagorean Theorem. Application of the theorem includes distance between points, the volume of...

Agriculture, deforestation, and urbanization. How have human's changed the planet and how might we mitigate the effects of human activity on the planet? To answer these questions class members research the changes in human land use from...

Magnets don't grow in fields, but magnetic fields are important to understand. The lesson covers the effect electricity has on magnetic fields. Scholars use a compass, magnets, and electrical wire to test magnetic fields and energy...

Psychologists designing experiments to research human behavior must consider weighty ethical concerns. Class members act as members of an institutional review board and examine proposals to determine whether included provisions...

Michael Phelps, the economist? Scholars research the economic advantages of specializing in one kind of service, and how it relates to athletes doing the same in their respective sports. They evaluate absolute advantage, production, and...

Provide your learners with a comprehensive introduction to Europe with this great set of worksheets. Map activities include matching European countries to their capitals and places on a political map, as well as...

Two slide shows, viewed side-by-side, permit middle schoolers to compare and contrast the lives of the Pilgrims of the Plimoth colony and the Wampanoags. Four videos take learners on virtual field trips to the Plymouth plantation. And an...

Whether you are viewing a landscape painting of a farm, examining a still-life portrait of a bowl of fruit, or reading a descriptive poem about cultivating food, you can't deny that agriculture plays a major role in visual and language...

Bring up the topic of world hunger in your class with two emotional videos. The short films are about a program for educating and feeding children around the world. Class members talk about poverty and pay close attention to the...

Young scientists create a simulation of Hubble's law. Introducing the Big Bang Theory using balloons and a simple lab worksheet, scholars complete a data table and perform analysis.

A probability activity presents a lottery game as an idea for a fundraiser. Pupils analyze the game to determine the number of possible outcomes, then determine whether the game would be a good way to raise funds and to support...

How do scientists identify which elements originate from meteorites? Scholars learn about a sample of material found in a remote location, analyzing the sample to determine if it might be from Earth or not. They study elements, isotopes,...

Behaviors are often based on assumptions. That's the big idea in the third lesson of a series of critical think resources. Through a series of worksheets, learners examine the conscious and heretofore unconscious assumptions that...

What does similarity have to do with the Pythagorean Theorem? The activity steps through the proof of the Pythagorean Theorem by using similar triangles. Next, the teacher leads a discussion of the proof and follows it by an animated...

How can you tell if fractions have equal value? Use various collaborative activities to demonstrate the ways to determine whether or not fractions are equivalent.

Pollywogs, tadpoles, and frogs. Here's a sequencing exercise that combines story telling and science. Kids paste illustrations of the life cycles of frogs in order on a story sheet.

Two informational texts feature community gardens of the past and present and how seeds grow. Scholars read, discuss what they have read, complete a timeline, define words, and compose a brief essay about the texts' main idea.

Don't give your classes the third degree. Use radians instead! While working with degrees, learners find that they are not efficient and explore radians as an alternative. They convert between the two measures and use radians with the...

Vocabulary words using the Latin roots sed, fin, and fer are hidden inside this word search. See if your learners can find the twelve words listed above the puzzle. Good luck!