Junior geometers use hands-on manipulatives to explore and describe the properties and attributes of a fundamental polygon, the triangle. They learn different kinds of angles and their measurements. This well-written lesson plan provides...

Looking at numerous examples of triangles, each with different properties, geometers develop their understanding of congruency. They use the notation of a counter-example to disprove certain conjectures and prove geometric theorems and...

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...

Demonstrate the abstract process of solving equations by using algebra tiles as a concrete representation. Scholars begin by solving equations through the use of manipulatives. As they gain more confidence, they progress to...

What are alloys, and why do we use them? Through a series of interactive puzzles, scholars examine the components and uses of several common alloys. The accompanying teacher's resources provide support in using the lesson, printable...

Young mathematicians hop, skip, and jump their way to a deeper number sense with the help of these printable handouts.

Stuck with triangle proofs? Take a 180° and provide learners with a guided instructional activity that tests their knowledge with triangle inequalities. The questions require different types of proofs that range in levels of...

Water, one of the basic needs of humans, is found in all three states of matter on Earth; no other planet—that we know of—possesses this quality. Here is a unit that allows learners to explore through experimentation what it...

A beautifully written lesson plan delves into a beautiful topic: stellar population. Engage aspiring astronomers with activities that examine human populations and then transition onto the stars of the universe. Data and photographs for...

It's time to increase the heat! Young chemists demonstrate heat transfer and heat capacity in an activity-packed lab, showing the transitions between solid, liquid, and gaseous phases of materials. Individuals plot data as the...

All the tools (and directions) you’ll need  to build an essay are included in a resource designed for learners and educators. The packet can be given to class members or divided into sections and used as part of a series of lesson...

What does it take to be considered a smart material? Learners investigate the properties of Nitinol, a smart material, through a hands-on lab activity. They examine the crystal lattice structure and the conditions required for Nitinol to...

The anode, the positive electrode, attracts negative charges, which is why we call negatively charged atoms anions. The interactive allows pupils to match six different anions to the associated properties when testing. Offering four...

Eleventh graders examine the history and development of the periodic table and properties of elements. They complete worksheets, take notes during a teacher-led discussion, and produce their own periodic table.

In this combinations worksheet, students determine the number of combinations in a given situation. They explore sets and determine if the relation is reflexive, symmetric or transitive. This one-page worksheet contains seven problems.

Young scholars prove angles congruent by use of vertical angles definition, subtraction postulate, and transitivity postulate.

In this phase diagram worksheet, students use a phase diagram to determine the critical point, phase boundaries, and phase transitions. This worksheet has 20 problems to solve.

Students construct a periodic table based on the physical and chemical properties of elements. In this chemistry lesson, students share their work with the class and explain why they classified the elements that way.

Young scholars investigate proofs used to solve geometric problems. In this geometry lesson plan, students read about the history behind early geometry and learn how to write proofs correctly using two columns. The define terminology...

This PowerPoint is a comprehensive review of all the facts related to an atom's basic structure and function. What makes this unique is that it is geared toward an audience of junior geologists. After introducing the periodic table of...

The periodic table of elements is a vital tool for all chemistry apprentices and professionals alike. Here is a chance for your beginning chemists to assess their understanding of the periodic table. They list element names, symbols,...

After viewing the documentary The Last Roundup, a documentary about the transitioning of Santa Rosa from a privately own island to a National Park, class members debate the takings clause of the Fifth Amendment that permits the...

Create a slide show that explains and applies any of the operations and algebraic properties using integers. Slideshows are compiled, shown to the class, and critiqued for accuracy by the rest of the class.

Elementary schoolers explore 3-D shapes. They transition from thinking of shapes as only 2-D. Pupils read Cinderella as a launching activity for their upcoming adventure, and explore a new world of 3-D shapes in this introductory...