We know about food chains and how energy moves through an ecosystem. This video takes a step back to examine everything starts... and ends - with Decomposers!

Students design and conduct experiments to determine what environmental factors favor decomposition by soil microbes. They use chunks of carrots for the materials to be decomposed, and their experiments are carried out in plastic bags filled with dirt. Every few days students remove the carrots from the dirt and weigh them. Depending on the experimental conditions, after a few weeks most of the carrots will have decomposed completely.

This map shows the distribution of the top 12 items picked up on Canadian shorelines across the country in 2017. A shoreline is anything that is connected to water: which includes coastlines, lake shores, river shores, inland communities, and storm drains. Marine debris is coming from all across the country. Do you use any of these items? What actions can you take to reduce the impact? Find out more.

In this activity, students investigate different methods (aeration and filtering) for removing pollutants from water. They will design and build their own water filters.

Students disassemble and analyze retractable pens. Through the process of "reverse engineering," they learn how the ink pens work.

This purpose of this task is to help students see two different ways to look at percentages both as a decrease and an increase of an original amount. In addition, students have to turn a verbal description of several operations into mathematical symbols.

Discover MyPlate is fun and inquiry-based nutrition education that fosters the development of healthy food choices and physically active lifestyles during a critical developmental and learning period for children — kindergarten.

Contains: Teacher guide, Emergent Reader Mini Books and teacher edition, Reach for the Sky song, Food Group Friends profile cards, Food cards, Look and Cook recipes, student workbook, the Five Food Groups poster, parent handouts and Discover MyPlate graphics

Discover Physics is a conceptual physics textbook intended for students in a nonmathematical one-semester general-education course.

With a simple demonstration activity, students are introduced to the concept of friction as a force that impedes motion when two surfaces are in contact. Then, in the Associated Activity (Sliding and Stuttering), they work in teams to use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor. The spring scale allows them to measure the frictional force that exists between the moving cup and the surface it slides on. By modifying the bottom surface of the cup, students can find out what kinds of surfaces generate more or less friction. They also discover that both static and kinetic friction are involved when an object initially at rest is caused to slide across a surface.

Students learn about memory by doing a memory-writing exercise, studying the brain to understand how it affects memory, reading Li-Young Lee's poem ńMnemonic,î and creating projects to demonstrate their understanding.

Students discover the mathematical constant phi, the golden ratio, through hands-on activities. They measure dimensions of "natural objects"—a star, a nautilus shell and human hand bones—and calculate ratios of the measured values, which are close to phi. Then students learn a basic definition of a mathematical sequence, specifically the Fibonacci sequence. By taking ratios of successive terms of the sequence, they find numbers close to phi. They solve a squares puzzle that creates an approximate Fibonacci spiral. Finally, the instructor demonstrates the rule of the Fibonacci sequence via a LEGO® MINDSTORMS® NXT robot equipped with a pen. The robot (already created as part of the companion activity, The Fibonacci Sequence & Robots) draws a Fibonacci spiral that is similar to the nautilus shape.

Through this lesson and its two associated activities, students are introduced to the use of geometry in engineering design, and conclude by making scale models of objects of their choice. The practice of developing scale models is often used in engineering design to analyze the effectiveness of proposed design solutions. In this lesson, students complete fencing (square) and fire pit (circle) word problems on two worksheets—which involves side and radius dimensions, perimeters, circumferences and areas—guiding them to discover the relationships between the side length of a square and its area, and the radius of a circle and its area. They also think of real-world engineering applications of the geometry concepts.

How would you describe the southwest part of the province? These five explorers were shocked, amazed and surprised by the beauty and diversity of the area. Whether it's your first time visiting or your tenth, Cypress Hills and the surrounding area is full of charm, adventure, diversity and of course, beauty.

Students read sonnets, charting the poemsŐ characteristics and using their observations to deduce traditional sonnet forms. They then write original sonnets, using a poem they have analyzed as a model.

Through a study of Langston HughesŐ poetry, students connect his writing to his place in history.

This is an activity about the periodicity of the solar cycle. Learners will calculate the number of M-class solar flares as a percentage of the total number of X-ray solar flares and graph these results as a function of time. When compared to a graph of the number of sunspots as a function of time, learners make conclusions about the period of the solar cycle. This activity uses data from the Geostationary Operational Environmental Satellite (GOES).

In this lesson, students will learn how cosmic rays were discovered and what they are - including their size and speed. Includes background information for the teacher, questions, activities and information about student preconceptions. This is lesson 1 of 4 from "The Cosmic Ray Telescope for the Effects of Radiation (CRaTER)."

The students will be able to identify questions and concepts that guide scientific investigations, recognize and analyze alternative explanations and models by the end of this activity.

These activities help students use organized lists and systematic counting to solve combination problems. Map coloring and networks are also discrete math problems that students can relate to real-world applications.