CK-12 Foundation
Limit of a Sequence: Finding the Limit of a Sequence (Part 2)
What does it mean if young mathematicians cannot put the squeeze on a sequence? Learners investigate a divergent sequence and find the formula for the nth term. Using the definition of a limit of a sequence, pupils try to find the limit...
Swiss Agency for Development and Cooperation
Gender and Sport
Serena Williams, Mia Hamm, and Danica Patrick are living proof that women enjoy sports just as much as men. Sports enthusiasts read about the importance of gender equality on the playing field. They discover barriers to participation and...
Howard Hughes Medical Institute
Determining the Size and Energy of the K-T Asteroid
Two different groups of scientists published scientific papers in 1980 offering proof of a large asteroid hitting Earth between the Cretaceous and Tertiary layers of ground. Scholars use a worksheet to analyze the same type of data as...
Cold Spring Harbor Laboratory
Genes Are Real Things
Proving microscopic structures exist is a difficult task. Learn how scientists did just that in the mid-1800s as they set out to identify the cellular structures related to genetics. The online lesson explains the collection of work that...
Howard Hughes Medical Institute
Discovering the Wallace Line
When studying locations of specific species, interesting patterns emerge. Young scholars discover this as they plot the location of specific species on a group of islands. Patterns emerge as they identify the Wallace Line. They then...
National Endowment for the Humanities
The Declaration of Independence in Six Parts
Everyone knows that the Declaration of Independence is important, but what does it actually say? Members of American history classes analyze the Founding Fathers' arguments against British tyranny and for a more perfect union with a...
Science Matters
Hot Wire S’mores
The proof is in the marshmallows. Believing that electric energy can transform into heat energy can be abstract, but a hands-on lesson gives pupils a concrete example. Young scientists cut marshmallows with copper wires before and...
Curated OER
Keyboarding: Formatting A Report Using MLA Style
Introduce your class to the MLA style of formatting. In addition to studying the formatting, learners improve language skills and review word processor features. They use the Interwrite SchoolPad for the first time to assist in proofing...
Curated OER
The Right Stuff
Studentsare introduced to the Pythagorean Theorem by exploring right triangles and the squares built on each side. They apply the Pythagorean Theorem to real-world problems. Students u se informal and nonformal arguments of proof (i.e.,...
Teacher Printables
Character Web
Character webs are a great way for readers to collect information and observations about characters. Here’s a template that asks individuals to record the title and author of the book, the character’s name, and observations about...
Illustrative Mathematics
Reflections and Isosceles Triangles
Geometers explore symmetries of isosceles triangles by using rigid transformations of the plane. They complete four tasks, including congruence proofs, which illustrate the relationship between congruence and rigid transformations. The...
Curated OER
Writing to Argue
Students write an argument using a clear structure and argumentative techniques. In this persuasive writing lesson, students brainstorm, write, and peer edit an argumentative essay. Worksheets include the prompt, facts and quotes, and a...
Curated OER
Vertical Tower 2
For this trigonometry worksheet, students prove that for the given conditions of the problem that cos y = cos2 x. The one page worksheet contains one problem with the solution.
Curated OER
Fool-proof Yogurt
Students make yogurt from powdered milk. In this yogurt experiment lesson, students combine powdered milk, warm water and plain yogurt. They mix up the ingredients and put it in an insulated cooler for 6-8 hours.
Curated OER
Fool Proof Printmaking
Students explore historical technology by participating in a printing activity. In this printing block lesson plan, students identify how mass papers were printed in the past by using blocks repeatedly. Students create their own printing...
Curated OER
The Big Burp: Where's the Proof.
Students explore the Cambrian explosion and Paleocene extinction events. In this climate change lesson, students read articles to link evidence they find to extinction and climate change. Links to the articles are included in the...
Curated OER
Disproving the Proof
Students investigate the progression of discoveries that have led to the genetics knowledge that scientists currently have. They determine how genetic experiments disproved previous theories on inheritance.
Curated OER
What Proof is There to Support Biological evolution?
Students identify who developed the theory of evolution. The concepts of adaptation and development are discussed. The age of the earth is explored in relationship to the development of various species. The condition of the environment...
Curated OER
Failure-Proof Writing: Assignments for the Student Who Can't/Won't Write
Pupils with learning disabilities are introduced to the techniques of proper writing. After completing a warm up, they practice writing about what they saw to determine where they are at in the process. In groups, they complete a set...
Curated OER
Deadly Dancing: Failure Proof Field Trips
Students are given an opportunity to role play a particular period of American History. They engage in a field trip that is then reflected upon and further research is done in the class. Their final project is to act out a play they...
Curated OER
Congruent Triangles
In this congruent triangles worksheet, 10th graders solve and complete 10 different problems to determine whether each set of triangles is congruent or not. First, they copy each diagram onto a piece of paper and mark up the paper with...
Curated OER
Proof It
Fourth graders complete a worksheet. In this spelling instructional activity, 4th graders complete a timed activity where they identify misspelled words and write their correct spelling.
Curated OER
Conducting Research
Third graders conduct research. In this conducting research lesson, 3rd graders discuss the importance of nonfiction text in providing factual information. Students write questions about an assigned topic and research using informational...
Curated OER
Easy Worksheet: Counterexamples
In this counterexamples worksheet, students solve 10 short answer problems. Students prove the given statements false by providing a counterexample thus disproving the statement.
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