Howard Hughes Medical Institute
Pulse Chase Primer: The Meselson-Stahl Experiment
Experimental design can make or break an experiment. Young scholars analyze the pulse-chase analysis procedure by studying the Meselson-Stahl experiment. Using a video presentation, they discover how the pulse-chase analysis led to the...
Virginia Department of Education
Greenhouse Gas Modeling Activity
Why are greenhouse gases called greenhouse gases? Young Earth scientists learn about greenhouse gases though experimentation in the second installment of a 3-part series. They use lamps to model radiant energy as well...
Teach Engineering
Dirty Decomposers
Do not let the class just sit and rot. Pupils learn how decomposition and nutrient recycling is important to an ecosystem. Groups design an experiment to determine how environmental conditions affect decomposition. They develop a poster...
Curated OER
Probability Experiment Simulation: Design and Data Analysis Using a Graphing Calculator
Seventh graders simulate probability experiments. Using a graphing calculator, 7th graders design, conduct, and draw conclusions from simulations or probability experiments. Students construct frequency tables and compare the...
Curated OER
Tie Dye
Students practice writing research proposals to test the color fastness of a dye once it has been exposed to a t-shirt. Each proposal needs details of experimental design, length of treatment, and means of cleaning the shirt. All...
Curated OER
Observations and Procedures
Young scientists critique the breakdown of detailed observations. They discover the importance of writing down experimental procedures. There are some guided discussion questions at the end of the resource.
Curated OER
Newtonian Mechanics
Young scholars familiarize themselves, through teacher demonstration, with Gavendish's apparatus first used for experimentally determining the value of the Universal Gravitational Constant G, and calculate theoretical value of Earth's...
Curated OER
Simple Probability
Students explore simple probability. Each student spins a spinner and records the result as they enter the room. The recorded results are used to calculate experimental probabilities. After the teacher explains how to calculate...
Curated OER
Plaque Busters
Students work with the scientific method; observation, hypothesis, and experimentation. They observe the effects of decay and the need of good oral hygiene during an experiment with an apple.
Curated OER
Transpiration
Students explain the function of the hydrologic cycle and demonstrate how transpiration rates can be experimentally changed.
Curated OER
Reinforcing the Scientific Method
Seventh graders explore a variety of situations and make hypotheses before designing possible experiments. They then are presented with an experiment actually done to solve the original problem and compare it with their results. Students...
Curated OER
"Lucky Charms": Interpreting Data and Making Predictions
Seventh graders determine if a "lucky charm" will increase their chances of winning a game. Students calculate the experimental probability of each player in a game. They observe and collect data from each activity. Students compare the...
Curated OER
Chaos
Learners explore the concept of probability. In this probability lesson, students use a applet that demonstrates chaos and probability of spread for a forest fire. Learners also play applets about the Game of Life and Rabbits and Wolves,...
Curated OER
Every Breath You Take
Young scholars study acids and bases and the uses of indicators. They interpret the actions of an indicator to conclude that bromothymol blue turns yellow in the presence of a weak acid.
Curated OER
Changing Ramp Heights
Students conduct an experiment to determine how the change in ramp height affects the distances a ball is able to move a stationary cup. Data is collected from several trials and recorded and analyzed.
Curated OER
Friction of a Block Weight
Fifth graders hypothesize and design an experiment to study the relationship between a block weight and the number of washers it takes to pull a block across various surfaces. Students graph results and apply their findings to a...
Curated OER
Window Gardens
Students use a plastic sandwich bag containing a damp paper towel taped to a window as a model system to observe the germination and early growth of radish seeds. They are challenged to pose a question about seed germination and growth...
Curated OER
Experimental Archaeology: Making Cordage
Students make a cordage and use an activity sheet to experience a skill that ancient Native American in North Carolina neded for everyday life.
Curated OER
Robert Boyle and Experimental Methods
Learners discuss the difference between the Baconian inductive method and the Aristotelian deductive approaches. They complete a given set of questions then discuss them with the class.
Curated OER
Microbe Experimentation: Sour Milk
Sixth graders design and conduct an experiment with milk to investigate how temperature affects bacteria growth. They, in groups, construct a hypothesis, perform the experiment and then record and present the results.
Curated OER
How Many Drops?
Seventh graders hypothesize about the number of drops of liquid that can be placed on a penny before it spills over. They examine both the concept of devising a hypothesis and the idea of surface tension. They determine the difference...
Curated OER
Aluminum Foil Boats
Students design a boat of aluminum foil and calculate the density of the boat. Washers are added to the boat until it sinks. Students then redesign boat to hold more washers and recalculate the new density.
Curated OER
Probability and Sports
Students research topics on the internet where probability is relevant. Students study statistics and probability concepts by looking at practical questions that arise in professional sports.
Curated OER
Graphing in an Experimental Context
Seventh graders discuss the importance of being able to represent scientific data in the form of graphs. They comprehend the differences between a bar graph and a line graph. Students identify the type of data with which each graph...
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