Cornell University
Extracting DNA
Uncover the basics of DNA structure through exploration activities. Collaborative groups build DNA models and recreate the process of replication. Then, using plant cells such as peas or strawberries, they extract a DNA sample.
Cornell University
Electroplating
Silver pennies and copper nickels are made possible by applying some chemistry. Learners use electrolysis to coat a penny with zinc sulfate and a nickel with copper sulfate. Their investigation builds an understanding of electroplating...
Cornell University
Discovering Enzymes
Explore the function of enzymes through a series of lab investigations. Learners use household enzymes such as hydrogen peroxide to model the role of enzymes. The enzymes break down proteins with and without a catalyst.
Cornell University
Nano What?
The size of a nanoparticle is difficult for pupils to grasp. A hands-on experiment is designed to give your classes perspective. Learners analyze different sports drinks for the content of electrolytes as an introduction to nanoscale....
DiscoverE
Water Sampling
What is the best way to test water quality? Using plastic bottles, scholars create monitoring sensors to test water quality. Creating three different sensors allows individuals to measure water quality at different water levels.
DiscoverE
Electrical Liquids
Liquid or not, here comes the electricity. Scholars test the conductivity of various substances using a circuit that includes a light bulb. If the light bulb lights up, then the liquid is a conductor. What a bright idea!
DiscoverE
Clean It Up
Water, water, everywhere, but not a drop to drink—until we clean it, of course! Scholars design a filtration device that removes pollutants from water. The goal is to have the water come out as clean as possible from the device. How...
Howard Hughes Medical Institute
Modeling Trophic Cascades
In the ecological game of who eats who, one small change can have a big impact! Individuals create food chains in an array of ecosystems, then determine what happens to organisms in the chain when one organism changes its feeding...
Nuffield Foundation
Extracting DNA from Living Things
Help! Someone's trying to take my DNA! An interesting lab experiment has scholars use basic materials to extract DNA. By applying ethanol, cold water, and a protease enzyme, like pineapple juice, they pull strands of DNA from peas,...
Biology Junction
Strawberry DNA
Humans eat around 93,205 miles of DNA in an average meal. Scholars learn how to extract DNA from a strawberry using a presentation. It walks through each step and explains why the process works. Comprehension questions encourage...
Biology Junction
Viruses, Viroids, and Prions
Are viruses living or non-living? According to the presentation, they are both and neither. Clearly, this requires clarification and an in-depth look at viruses, viroids, and prions. Young scientists learn about the history, structure,...
Biology Junction
Energy Flow in an Ecosystem
Every living thing requires a food source, thus the interconnections in ecosystems become complex. Scholars learn about these interconnections in a presentation on energy flow. It starts with the sun and moves through many different...
Smithsonian Institution
Comparing Confederate and Union Soldiers
The Civil War, a war that divided a nation. Comparing and contrasting the Confederate and Union soldiers is not always an easy task, but the eighth of 15 resources makes it easy to teach the concepts. Exercises include watching videos in...
PBS
Latino Americans: Timeline of Important Dates
From 1500-2000, an interactive timeline details important events related to Latino Americans. Next, to each date are small, yet informative blurbs—some of which include videos.
Discovery Education
Urinalysis
What do lab tests reveal about a patient's health? Scholars perform a simulated urinalysis on two different patients by testing color, pH, glucose levels, and protein levels. Then, they compare their findings to what they know passes...
American Museum of Natural History
Grow Rock Candy
The best way to study crystals is to make your own! A hands-on lesson shows learners how to make their own rock candy from household materials. While they watch the crystals grow, they discover their structure and can even eat their...
Curated OER
Unit 7 Acid and Base
A series of 25 multiple choice questions is presented to chemistry learners to review properties of acids and bases. A page of notes precedes the questions and contains information about the Arrhenius and Bronsted-Lowry definitions,...
Curated OER
Earth Systems
Ninth graders investigate biological systems. They summarize relationships between systems. Students determine how systems relate within the biosphere. They analyze the carbon cycle.
Curated OER
Describing a Chemical Reaction: Playing with Copper
Three experiments involving pennies help young chemists see the chemical reactions between copper and other elements. The first experiment is rhetorical (it prompts students to leave a bright penny out for a year) but the second two...
Curated OER
Ice Cream in a Bag
Here is a good version of this classic chemistry activity. Learners are given a simple recipe for how to make home-made ice cream by putting all of the ingredients into a ziploc bag. Before doing the activity, I would recommend having a...
Curated OER
To Float or Not to Float - Density
Students experiment floating a variety of objects in various liquids. They discover how density affects the ability of an object to float and apply the concept of density to solve problems.
Curated OER
Mixing Dissolving Quiz
Answer true or false to get through this 11 question quiz on mixing and dissolving. Budding chemists who know their stuff will have no problem determining which dissolving and mixing questions are correct. A basic quiz on the basic...
Curated OER
Presenting Information
How do you make a pizza? Scholars examine a recipe for one of their favorite dishes. After reading the eight steps, they must re-write the steps in order. Although this offers great printing practice, younger writers may find the narrow...
Curated OER
Shaking Up Ice Cream
Upper graders use a variety of tools to measure liquid and solid ingredients in an ice cream making recipe. Following written and oral directions and accurately timing themselves forms the basis of this lesson.
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