Howard Hughes Medical Institute
Modeling the Regulatory Switches of the Pitx1 Gene in Stickleback Fish
Gene switches work similarly to light switches in controlling one feature of their environments. Scholars study the Pitx1 gene in a specific type of fish. They learn the different ways this switch controls various body parts and...
Howard Hughes Medical Institute
Stickleback Evolution Virtual Lab
How quickly do animals evolve? Can comparing different samples of the same fossil answer timeline questions? Scholars use virtual labs to examine fossils and learn about stickleback evolution. They compare pelvic morphology in lakes...
Howard Hughes Medical Institute
Mendelian Genetics, Probability, Pedigree, and Chi-Square Statistics
People with the sickle cell trait, but not sickle cell disease, find natural protection against malaria. Scholars consider various combinations of genotypes and environmental factors to determine if children might have sickle cell...
Howard Hughes Medical Institute
Determining the Size and Energy of the K-T Asteroid
Two different groups of scientists published scientific papers in 1980 offering proof of a large asteroid hitting Earth between the Cretaceous and Tertiary layers of ground. Scholars use a worksheet to analyze the same type of data as...
Serendip
Carbohydrate Consumption, Athletic Performance and Health – Using Science Process Skills to Understand the Evidence
Should athletes carb load before an event or consume carbohydrates during the competition? Scholars discuss how to set up a hypothesis and experiment to answer a question relating carbohydrates and athletic performance. Then, they read...
Serendip
Vitamins and Health – Why Experts Disagree
Should people take vitamins or get the needed minerals through diet? Experts disagree based on many different factors. Scholars compare study findings and discuss the differences. They learn the importance of comparing results across...
Serendip
Should You Drink Sports Drinks? When? Why?
New research proves even rinsing your mouth with carbohydrates without swallowing improves performance of the central nervous system. While some think sports drinks are amazing, others say they are a waste of money. Scholars learn about...
Serendip
Should States Repeal Their Laws Banning First Cousin Marriage?
Around half of the states in the US ban first cousin marriage, but does science support that ban? Scholars work through genetic analysis of the risks to understand if more states should ban the practice—or if some should remove it. They...
Serendip
Soap Opera Genetics – Genetics to Resolve Family Arguments
Did she cheat on her husband? Did the hospital switch the babies? Should they have children? As much as this sounds like the plot for a soap opera, all of these questions fit into a single lesson on genetics. Scholars read about three...
Serendip
Mitosis and Meiosis Card Sort
Cells divide by one of two processes, either mitosis or meiosis. Scholars sort cards into two sets, one representing each type of cell division. Then, they sequence the cards demonstrating an understanding of the movement of chromosomes.
Serendip
Mitosis, Meiosis and Fertilization Vocabulary Review Taboo Game
Can you describe a gamete without using the words sperm or egg? Scholars play a vocabulary review game where they try to get other players to guess their words. Each card has the target word as well as two related words they must not...
Serendip
How Do Muscles Get the Energy They Need for Athletic Activity?
Every muscle movement requires energy, but where does that energy come from? Scholars answer this question and more as they complete a worksheet. By following the directions, completing research, and discussing it as a class, they begin...
Howard Hughes Medical Institute
Classroom Activities: EarthViewer
The spot you are standing in right now—how did it look 2,000 years ago, one million years ago, or even four billion years ago? Scholars use a model of Earth throughout history to learn about continental drift, climate change, changes in...
Howard Hughes Medical Institute
EarthViewer Climate Guide Activity
What did Earth look like 4.5 billion years ago, and what was the climate like then? Scholars explore a view of Earth throughout history. They observe continents moving, temperatures fluctuating, and huge changes in ecosystems. A...
Howard Hughes Medical Institute
Distribution of Elements in Earth’s Crust
How do scientists know the difference between a meteorite from space and a regular rock from the earth? Scholars read a passage and answer comprehension questions about the creation of the solar system. They extrapolate the main ideas to...
101 Questions
Girl Scout Cookies
How many Girl Scout cookies can you fit in a trunk? Learners consider this question after watching a video of an SUV being filled to the top with single boxes of the cookies. They use measurements of the trunk and the box of cookies to...
Council for Economic Education
Christopher Columbus, Entrepreneur? Queen Isabella, Venture Capitalist?
What did it take to embark on a journey to unknown lands? Perhaps ambition, but also money! Christopher Columbus had to approach more than one European monarch for financing before he could sail the ocean blue. A read-along play and...
Council for Economic Education
Why Didn't China Discover the New World?
Who was Zheng He and why haven't we heard of him? Scholars consider the question as they compare his vast expeditionary force to that of Christopher Columbus. Young historians then ponder the intersection of science, economics, and...
Council for Economic Education
Business in the Middle Ages: Working in a Guild
Long before modern labor unions, guilds worked to ensure that workers had a fair wage. But, in medieval Europe, they also cooperated with the government. Using a simulation and primary source analysis, young scholars become hatters in...
Council for Economic Education
Wages and the Black Death
While the Black Death wiped out a third of Europe's population during the Middle Ages, its destruction paved the way for better wages for workers and even an early form of modern capitalism. The relationship between the cataclysmic event...
Council for Economic Education
Athens and Sparta-Imagine the Possibilities
Both Athens and Sparta made choices to survive in ancient Greece. Those choices were, in essence, economic ones about how to direct resources. A Venn diagram activity and reading ask class members to examine the connection between...
Council for Economic Education
Entrepreneurs in Mesopotamia
While ancient Mesopotamia didn't have the TV show "Shark Tank," it was a time of entrepreneurship as workers began to specialize. Both individual workers and the societal structure encouraged individuals to consider how they could...
Council for Economic Education
Great Civilizations Develop around Rivers
If you lived in prehistoric times, what kinds of choices could your family make to increase their chance of survival? By making similar decisions in a simulation game, participants discover how specialization creates both opportunity and...
Howard Hughes Medical Institute
Calculating Iridium Fallout from an Asteroid Impact
Should we be afraid of a large asteroid impact on Earth today? Young scientists estimate the size and composition of an asteroid similar to the one that caused the K-T mass extinction. They apply algebraic formulas to answer questions...