Students are introduced to the important concept of density with a focus is on the more easily understood densities of solids. Students use different methods to determine the densities of solid objects, including water displacement to determine volumes of irregularly-shaped objects. By comparing densities of various solids to the density of water, and by considering the behavior of different solids when placed in water, students conclude that ordinarily, objects with densities greater than water sink, while those with densities less than water float. Then they explore the principle of buoyancy, and through further experimentation arrive at Archimedes' principle that a floating object displaces a mass of water equal to its own mass. Students may be surprised to discover that a floating object displaces more water than a sinking object of the same volume.

Objectives
*Teach students about how long their fruits and vegetables last for safe consumption
*Allow students to practice asking scientific questions - forming questions and hypotheses

The football team's bench fell apart at the game. We need to design and build a prototype for a new bench using the properties of congruent triangles and/or parallel lines.

Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Beginner Yoga Workout
Linked to the Nebraska State Physical Education Standards

Show what you know about equivalent fractions and ordering by choosing three activities (in a row, column, or diagonal) to complete the tic-tac-toe board. Standards assessed: 3.NF.3a-d, 4.NF.1, 4.NF.2. This assessment was designed for adult basic education.

Match shapes and numbers to earn stars in this fractions game. Challenge yourself on any level you like. Try to collect lots of stars! The main topics of this interactive simulation include fractions, equivalent fractions, and mixed numbers.

The Fractured Fairy Tale tool encourages students to create their own fractured fairy tales.

FreeReading is an open source instructional program that helps educators teach early literacy. Because it is open source, it represents the collective wisdom of a wide community of teachers and researchers. FreeReading contains, Intervention A, a 40-week scope and sequence of primarily phonological awareness and phonics activities that can support and supplement a typical kindergarten or first grade "core" or "basal" program.

Between 70 and 75% of the Earth's surface is covered with water and there exists still more water in the atmosphere and underground in aquifers. In this lesson, students learn about water bodies on the planet Earth and their various uses and qualities. They will learn about several ways that engineers are working to maintain and conserve water sources. They will also think about their role in water conservation.

This lesson can be used with numerous pieces of literature, videos or cassette material to develop viewing and listening skills and the students ability to compare and contrast. One of the richest sources is in the area of fairytales and folktales. This an especially good source if you can find a modernized version in video or cassette form to contrast with the more traditional written form. I have used the "Frog Prince" because of this factor and because it was part of the 4th grade language arts reading unit.

This is a continuation of Fundamentals of Physics, I (PHYS 200), the introductory course on the principles and methods of physics for students who have good preparation in physics and mathematics. This course covers electricity, magnetism, optics and quantum mechanics.

Students must think about the factors of each number as they play this game. Students quickly learn the value of selecting prime numbers as a strategy. The beauty of the game design is that students will review the factors of many numbers and mentally add the sum of these factors together in search of the "best move."

This lesson unit is intended to help you assess how well students working with square numbers are able to: choose an appropriate, systematic way to collect and organize data, examining the data for patterns; describe and explain findings clearly and effectively; generalize using numerical, geometrical, graphical and/or algebraic structure; and explain why certain results are possible/impossible, moving towards a proof.

Geysers and grizzlies and glaciers, oh my. The national parks may be America's best idea, saving the finest parts of the nation for everyone to enjoy forever. What better way to learn about the natural world than to tour the parks with us? We'll explore how the mountains and valleys formed and why they often come with volcanoes and earthquakes. You'll see what really killed the dinosaurs and how we can help save their modern relatives in the parks. With film clips, slide shows, and our geological interpretations of classic rock songs, isn't it time for a road trip?

This task presents students with some creative geometric ways to represent the fraction one half. The goal is both to appeal to students' visual intuition while also providing a hands on activity to decide whether or not two areas are equal.

Students engage in a competitive group relay to construct formal proofs involving triangles.

New proofs can always be written to fit different curriculum and pacing.

CK-12 Geometry Teacher's Edition covers tips, common errors, enrichment, differentiated instruction and problem solving for teaching CK-12 Geometry Student Edition. The solution and assessment guides are available upon request.

These games support student development of spatial sense and foster familiarity with the mathematical vocabulary of geometry.

This was created to introduce my adult students to the accessibility of Geometry and Measurement in the world around them. It can serve as a 1-day activity, or be split into several days. It was followed by a series of more in-depth lessons on shapes, angles, perimeter, area, and volume. Introducing each activity and stopping to discuss after each activity is necessary to helping students process the new information, encourage their latent knowledge, and reassure their uncertainties. Pair or group work is helpful, not only in encouraging weaker students to participate, but in creating greater group cohesion for more effective learning in the new unit.

Tools used: rulers, yard sticks, meter sticks, measuring tape, string w/2 pencils to create circles; styrofoam meat trays, cardboard and scissors to create 2-d shapes; calculators