Women rose to the challenge when the nation's war effort called them—but were sent home when the GIs came back from World War II. Young historians consider whether the United States valued women's contributions during the war using a...

Geometric shapes make great visual models for introducing young mathematicians to the concept of fractions. Looking at a series of four circles, students are asked to determine whether or not one half of each circle is shaded. To support...

Models are an important part of science; they help us see the world on a scale that works for us. In the first of five lessons on HIV, learners make a paper model of the HIV virus that is about 500,000 times larger than the actual virus....

Life science learners read a set of six short Discovery Readings that describe historical events in the field of microbiology. For each, they identify clues about when the event occurred and then they try to arrange events in...

Shake things up in your STEM or earth science classroom when you have small groups construct their own seismographs. A reading assignment on the history of seismographs, the Richter scale, and current technology sets the stage for the...

Do all languages have a common ancestor? Although no one yet knows the answer to that big question, the narrator of this short, animated video explains how linguists use migration patterns, geological features, and word clues to...

Learners take on the role of astronomers, calculating conditions necessary for a total solar eclipse. Concepts of similar triangles and properties of circles come together as pupils create ratios and use real measurements in determining...

Urbanization and how it affects wildlife is the focus of a presentation that uses statistics to make a case for concern and change.

Learn about damage associated with earthquakes and materials that best withstand a quake. A lab engages class members in the experimental design and construction of sturdy structures that can endure various earthquake...

Beneficial for beginning readers, struggling readers, and those in need of review, a set of language arts activities is a great addition to any foundational reading unit. Focusing on phonological awareness, fluency, instructional...

Sometimes, taking things apart is more fun than putting things together. Groups of learners participate in a reverse engineering activity. They dissect a device of their choosing to see how it works—great hands-on learning from the...

Are brighter stars actually brighter? Turns out they are probably just closer! A presentation compares features of stars to our favorite star, the sun. In addition, solar lovers learn to classify stars based on their masses,...

Can they put it all together? Ninth graders apply what they know about proofs and triangle congruence to complete these proofs. These proofs go beyond the basic triangle congruence proofs and use various properties, theorems, and...

Elementary schoolers solve practice problems on the board and are shown how to line up the numbers for addition. They solve various addition problems in small groups. Everyone continues the same process for solving subtraction problems.

Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...

To be used in connection with a group project or at the end of a unit, this handout contains two essay writing prompts. The first prompt asks a group of learners to work together to evaluate their groups' performance as well as each...

Students explore the concept of conditional probability and probability of simultaneous events. In this conditional probability and probability of simultaneous events lesson, students roll dice or use and applet to roll dice to determine...

Learn ways to simplify algebraic fractions with a video that reviews how to simplify rational expressions by canceling common factors and how to add and subtract simple rational expressions. A worksheet tests pupils' understanding...

To wrap up your year of general chemistry, have lab groups compete in a tot wire chemical vapor deposition (HWCVD) competition. With their foundation in chemical nomenclature, stoichiometry, and gas laws, each group completes several...

Young singers learn how to notate the rhythms and melodies of a familiar song using Kodaly hand signals and manipulatives. Individuals then create their own compositions and sing them using Kodaly notation.

Second graders use cards to create 3-digit addition problems and add them together. In this addition lesson plan, 2nd graders add numbers with and without regrouping. Students use a deck of cards to play an addition game in pairs. A very...

In this early addition practice activity, students use their counting skills to solve 5 problems that require them to count math counters in boxes adding them together.

The addition and subtraction of decimals is a relatively simple process. The most important thing to remember is to have all of the decimal points lined up. This presentation gives that strategy, plus some others to use when performing...

Groups of Kindergarten students count craft sticks in different groups and name how many they have. They complete simple addition to ten with the use of manipulatives.