The divisibility rules are invaluable tools to possess. Sal teaches students to recognize divisibility using the divisibility rules. He explains why 380 is divisible by some numbers and not by others. Tip: Create a handout on the...

If your class has watched the Khan Academy video on recognizing divisibility, they will have a good foundation for this video on finding factors. Sal demonstrates how to find factors of a number by using the divisibility rules and...

Fourth graders explore negative numbers with this resource. They discuss positive and negative numbers by counting who is present and absent, placing numbers on a number line, and graphing temperatures. Using a variety of activities,...

Early learners identify commonly used fractions such as  halves, thirds, and fourths. There are many activities in this three part lesson. They use manipulatives to develop an understanding of fractions and fractional parts. They...

What was the main cause of European colonization in America? How did Thomas Paine's Common Sense play a role in the establishment of the United States? What was the trans-Atlantic slave trade? These are just a few of the many questions...

Students recognize and generate equivalent forms of fractions, decimals, and percents. In this conversion instructional activity, students analyze sets of fractions to find forms of 'one' used in equivalent fractions. Students use models...

Explore the effect of outliers through an analysis of mean, median, and standard deviation. Your classes examine and compare these measures for two groups. They must make sense of a group that has a higher mean but lower median compared...

Students work in groups to show understanding of the relationship between fractions, decimals, percentages, and the application of ratios and proportions. In this decimals, fractions, and percents lesson, students use real life consumer...

Sun, sand, ocean, and geometry—what more could a class need? The main activity in this unit has learners calculating the volume of sand-building equipment and beach balls using sphere, cone and cylinder formulas. The real wealth of...

The example of two travelers meeting somewhere along the road has been a stereotypical joke about algebra as long as algebra has existed. Here in this detailed presentation, this old trope gets a careful and approachable treatment....

Which document introduced the idea of limited government? What is the official beginning of the American Revolution? From the colonial period to the establishment of the Constitution, this assessment includes 40 multiple choice questions...

Tenth graders focus on estimating the value of nth roots by placing them onto number lines and making comparisons to other numbers with which the students are familiar and this enables students to relate new numbers to familiar ones.

This unit on integers includes a pre-test, a post-test, four spreadsheets, and links to an interactive web-site to support the learning of integer operations. Access to computers and the Internet are imperative to this unit. The lessons...

One thing that puzzles a lot of young algebrists is the factors in a word problem that are taken as "understood". This presentation on solving systems of linear inequalities does a great job walking the learner through how to tease those...

Known for being one of the few monogamous animals, Diplozoon paradoxum live on fishgills. The video details animals that appear monogamous and the research on their mating habits. From open polygamy to cheating, various species strive...

Use proper letter format and grammar to participate in a mail relay. After completing a pre-test about their knowledge of proper letter format, middle and high schoolers write letters to pupils in other high schools, which are relayed...

Use this literary terms quiz as either a pre-test or summative assessment! Twenty-six questions test your middle and high schooler's knowledge of different literary terms like protagonist, allusion, irony, metaphor, and motif. It's a...

Ninth graders listen as the teacher identifies and defines four math properties. They use manipulatives (small and large rocks) to experience non-traditional number systems. They use the rocks and pebbles to demonstrate the properties....

Ninth graders review and apply the commutative, associative, identity, and inverse properties to a variety of sets of numbers. In this number system properties lesson, 9th graders apply the closure property and demonstrate their...

Tenth graders apply their knowledge of similiar polygons to make conjectures about similarity among three-dimensional models. They test their conjectures by measuring three-dimensional objects and comparing corresponding lengths of...

Ninth graders investigate quadrilaterals.  In this geometry lesson, 9th graders examine and classify quadrilaterals using the slope, midpoint and distance formulas.  Additionally, students create various quadrilaterals given three point...

Unlike mathematics, statistics comes with a context. The author reminds teachers that data analysis involves using the context to make sense of the numbers. The article stresses good communication skills by highlighting the scoring...

An assessment takes a close look at the story, Tuck Everlasting by Natalie Babbitt, and tests writing abilities. Over the course of two days, scholars read an excerpt, answer questions on a worksheet pertaining to the author's purpose...