K20 Learn
Filling Our Land with Landfills: Solid Waste Disposal
New ReviewThough it comprises only 5 percent of the world's population, the US generates 40 percent of the world's waste. Scholars learn about landfills, their safety, and other solid waste methods. They use experiments and research to learn more....
Self-esteem fund
Self‑Esteem Activity Guide (For Youth Leaders of Young Girls)
Did you know that over 70 percent of girls avoid certain activities because they feel bad about their looks? This fantastic resource includes 18 tried and true activities designed to help girls establish positive self-esteem.
Yummy Math
Steep Hikes
Grab your hiking gear and get ready for a math adventure! Learners explore the meaning of percent grade change, as compared to the slope in an excellent worksheet activity about hiking trails in the mountains of New Hampshire. They use...
Illustrative Mathematics
Battery Charging
Your class will be very interested in the results of this activity. How long does it take a MP3 and video game player to charge? Sam only has an hour and the MP3 player only has 40% of its battery life left. Plus, his video player is...
Curated OER
Peter Rabbit Meets Charles Darwin
Students start to think of evolution in terms of populations. The class follows a cartoon scenario of a rabbit population in which there is selection and change of gene frequency. They receive copies of the scenario or the whole thing...
Curated OER
Summer Intern
Your young apprentices build a function describing the percent concentration of salt in a brine. The rational function is then related to the parent function, y= 1/x, and graphed. Finally, the apprentices predict the amount of fresh...
Smarter Balanced
Food Waste and Food Access
Forty percent of food in the US goes uneaten while 14.5 percent of US households lack a secure supply of food. As part of the preparation for a performance task assessment, groups consider statistics such as these about food waste and...
Institute of Electrical and Electronics Engineers
A Century of Plastics
After reading about polymer materials, engineer trainees examine how plastics have been integrated into everyday products. In groups, they compile a list of products made entirely without plastics and then, as a closing activity, try to...
NOAA
Fishy Deep-sea Designs!
Oceans represent more than 80 percent of all habitats, yet we know less about them than most other habitats on the planet. The instructor introduces the epipelagic, mesopelagic, bathypelagic, twilight, and midnight zones in the ocean....
Baylor College
Using Food Labels
Help your class make sense of nutrition labels with the ninth lesson of this series. After explaining the different information provided on packaged food labels, perform an activity that demonstrates the amount of sugar in a single can...
Carolina K-12
Compulsory Voting
Should voting in the United States be compulsory? In 2004, fewer than 60 percent of eligible voters cast ballots in the American national elections. After reviewing arguments for and against compulsory voting, your young citizens will...
Southwestern Medical Center
Field Epidemiology: Investigation of an Unknown Disease
More than 90 percent of the people in a building have come down with an illness, and it is your job to investigate. Teachers give scientists the data needed to decide what is important and how they can solve the mystery. The exercise is...
Columbus City Schools
Photosynthesis and Respiration
Thirty percent of the world's oxygen is produced by rainforests found throughout the world. Seventh grade learners explore the processes of photosynthesis and respiration through 10 days of labs, manipulatives, and discussions. They...
University of Connecticut
Weather Vs. Whether
Monarch butterfly populations have decreased by 90 percent over the past 20 years due to misuse and ineffectiveness of some pesticides. Given the challenge to increase pesticide safety and effectiveness, the class, through discussion,...
NOAA
Exploring Potential Human Impacts
Arctic sea ice reflects 80 percent of sunlight, striking it back into space; with sea ice melting, the world's oceans become warmer, which furthers global warming. These activities explore how humans are impacting ecosystems around the...
National Institute of Open Schooling
Air Pollution
Seventy percent of the air pollution in China is due to car exhaust. Under the umbrella of environmental chemistry, learners extensively explore air pollution. From the makeup of our atmosphere to sources of major air pollutants, classes...
EngageNY
Estimating a Population Proportion
Find the percent of middle schoolers who want the ability to freeze time. The 21st installment in a series of 25 has groups collect a random sample of respondents who answer a question about superpowers. Using sample statistics,...
California Academy of Science
Sustainable Water Solutions: Weighing the Pros and Cons
Switching indoor water fixtures to low flow reduces water usage by more than 45 percent. This and other solutions to reduce water usage have both pros and cons. Scholars view videos of different solutions, discuss them in small groups,...
California Academy of Science
Rapid Brainstorming: How Can We Conserve Our Water Resources?
Water covers around 75 percent of the earth, yet humans struggle to find enough fresh water to live. The fourth of 10 lessons focusing on Fresh Solutions requires brainstorming. Young scientists consider various problems related to fresh...
California Academy of Science
Exploring the Impacts of Feeding the World
Approximately 50 percent of people in the world who are chronically hungry work in agriculture. While it seems counter-intuitive, the farther you live from a farm, the more food options are available. Scholars explore concepts related to...
Delaware Health and Social Services
My Life. My Plan: Women
Nationwide, over 40 percent of pregnancies are unintended. A lesson designed for women of childbearing age asks them to consider their goals and provides information about reproductive health. Learners view a PowerPoint presentation and...
Equality and Human Rights Commission
Negative Attitudes
A study in the United Kingdom found that approximately 60 percent of workers had heard the term gay used as an insult in the professional workplace. Scholars consider discrimination, negative attitudes, tolerance, and stereotypes in the...
Princeton University
A Teacher's Guide to the Universe
Astronomers only observe four percent of the universe as the rest hides in darkness. The size, shape, and movement of the universe are the focus for an long-term high school unit. Its 43 lessons include hands-on experiments, direct...
Howard Hughes Medical Institute
The Molecular Evolution of Gene Birth and Death
More than 90 percent of humans' DNA doesn't code for anything! Scholars watch a presentation as they answer questions relating to gene mutations. They read details, watch videos, and view animations supporting the concepts. The questions...
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