Build confidence in proofs by proving a known property. Pupils explore two approaches to proving base angles of isosceles triangles are congruent: transformations and SAS. They then apply their understanding of the proof to more complex...

Demonstrate the ratio of surface area to volume in your high school class by using phenolphthalein, gelatin, and an onion. Intrigue the class by leading a discussion on osmosis and diffusion, then making "scientific jello." Participants...

How do dilated line segments relate? Lead the class in an activity to determine the relationship between line segments and their dilated images. In the fourth section in a unit of 16, pupils discover the dilated line...

Discover a new application of the Pythagorean Theorem. Learners prove and apply the converse of the Pythagorean Theorem in the 17th lesson in a 25-part series. The examples ask learners to verify right triangles using the converse...

Scholars become experts on the eight major impacts of climate change through a jigsaw and grand conversation. They then research and present what they learned about effects specific to their region.    

Get your hands dirty with a set of earth science activities! Class members delve into a hard-boiled egg to find the similarities to the earth's layers, create a papier-mâché model of the earth, craft a simulation of the earth's...

Barrio de Paz is the story of Nelsa Libertad Curbelo, a nun, who works with the gang youth of Guayaquil, Ecuador. The 17-minute documentary focuses on her explanations for the rise of gangs and for how gang culture reflects...

Do ratios have values? The seventh lesson in a series of 29 introduces the value of a ratio. Pupils create associated ratios to a given ratio. They also describe the fraction associated to the ratio as the value of the ratio.

With the explosion of social media sites, with online threats and cyber bullying, issues of freedom of speech have taken on a whole new aspect. Elonis v. U.S. represents the first time the Supreme Court has considered whether or not...

Need a bright idea for an engaging lab? Watch your class light up as they explore the difference in efficiency between incandescent and LED bulbs! The resource makes use of simple materials and encourages learners to infer what's...

What does your class know about GMOs? Are they savvy to selective breeding? Challenge young minds to engineer the greatest crop of all time using a hands-on genetics unit. Learners discover the good and bad details of selective breeding,...

You are what you eat, as they say! Are you more starch or more protein? Young scholars use their knowledge of each component to test different foods for their content. Using multiple indicators, individuals describe the protein and...

Whether out of choice or necessity, people want to know what will happen on a typical day in court. A helpful lesson walks scholars in the field of criminology through the trial process from opening statements to the final verdict. 

Speak your mind. Scholars present their claims in groups of three. They use a presentation checklist as each member takes a turn. At the end of the lesson plan, pupils complete an End of Unit 2 Assessment: Presenting a Claim and Findings...

Crawl into the world of the darkling beetle with this scientific investigation. Watch as the insects move through the larval, pupal, and adult stages of life, recording observations along the way. Discuss the necessities of life as young...

Seeking to derive the formula for the volume of a square pyramid, geometry learners construct six square based pyramids that, when pieced together properly, form a cube. Two short videos demonstrate the relationship...

Hang a strip of foil on a stand and form a loop out of it. Then attach the clips of a battery-operated circuit to the loop to see its sides repel each other. This simple demonstration is applicable and easy to add to your lecture on...

This model of the amount of anibiotics in a person's system is represented abstractly by a finite geometric series. Learners translate this real-life situation into algebraic form and then extend their knowlege by answering questions...

Unearth this gem of a resource to use in your geology unit! With colorful images, bullet-point text, and links to related videos, it deals with the characteristics, properties, and identification of minerals. There are also slides...

How did Union General Ulysses S. Grant view the surrender of Confederate General Robert E. Lee in 1865, which effectively ended the United States Civil War? After reading an excerpt from Grant's autobiography, your young historians will...

Thor, Loki, Iron Man, and Captain America. As part of their study of Greek and Roman gods and heroes, middle schoolers compare the characters in The Avengers to Greek counterparts. Individuals then create their own superhero,...

In this, the third in a series of four resources that use Robert Wise's 1951 version of The Day The Earth Stood Still as the core text, young film makers examine the language of film including shot composition, camera angle, lighting,...

How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate...

John Steinbeck's novella, Of Mice and Men, is commonly taught in 9th or 10th grade across the United States. After reading the tragic story of George and Lennie, use this short quiz to test your students' reading comprehension or use...