Curated OER
Hydrated Salt
Students plan, design, and carry out an experiment to determine an empirical formula for a hydrated salt X that tell students when all the water has been removed from hydrate crystals.
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Catalase Enzyme
High schoolers design and conduct an experiment to test their ideas about how to speed up or slow down the rate of an enzyme-catalyzed reaction. They have access to an array of physical and chemical factors that might influence enzyme...
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Population Density In Fish
Students investigate how a population of fish multiplies in an ecosystem and the kinds of things that must be done to maintain a healthy population balance with other organisms that live there. They conduct an experiment to test the...
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The Bernoulli Effect - Conceptually
Students observe and/or conduct five experiments which address the Bernoulli Effect. In this conceptual lesson based on the Bernoulli Effect, the students construct atomizers, and make concrete observations and inferences in connection...
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Physics: Force and Motion
Students use the internet to discover the basic concepts in physics. They complete interactive simulations where variables can be changed. They answer comprehension questions to end the lesson.
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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...
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Density and Buoyancy Experimental Design
Pupils must plan, design, and conduct an experiment that answers the scientific question: "Come up with a question that addresses the factors (variables) of the water and its effect on whether an object floats or sinks."
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Ice Cold
Young scholars design and conduct an experiment to investigate what happens when salt and ice come together and to determine if one form of salt is better for melting ice on steps and sidewalks.
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How Can Sounds Be Different
Second graders explore energy and motion. They investigate how sound energy moves in waves. Students explore how sounds are varied and how the instruments that make those sounds are built. They observe sounds being produced and predict...
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An Enzyme- Substrate Model
Students explore reaction rates of an enzyme-mediated reaction. They examine the effects of environmental variables on enzyme function. Students collect, graph, and analyze data relating to the reaction.
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Making a Battery and Energy Transformation
Seventh graders determine what makes a battery work. In this battery instructional activity, 7th graders brainstorm ideas about how they think batteries provide energy. They perform an experiment in which they work as a team to assemble...
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Dynamic River Model
Students develop the concepts of flood stage, levees, floodplain, and the dynamics of river flooding. They construct river models and test various flow rates and volumes. This lesson has an excellent experiment for students to do.
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Respiration
Learners study the gas exchanges that occur during cellular respiration. They observe what happens as a result of a number of variables on the rate of respiration. They use microrespirometers to measure the oxygen consumption of...
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Stimulus/Response in Invertebrates
Students design and conduct and experiment to determine how invertebrates react to an outside stimulus such as light and other stimuli. Student must develop a clear plan of action, collect data in an organized manner and analyze their...
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Testing Battery Combinations
Fourth graders examine the required combinations of plates and predict which combination will generate the most and least current and voltage. They use an ammeter and experiment with combinations of their own testing and record each...
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Selecting Soil For a Sports Field
In this science activity, learners take part in a laboratory exploration looking at different types of soil. The soil is evaluated in order to fill the role of becoming a sports field.
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Mutations--Preexisting or Acquired?
Students state the controls and variables of the Newcombe spread experiment. They state a hypothesis for the Newcombe spread experiment. Students distinguish between the characteristics of a preexisting mutations and those of an...
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Barometer Investigation
Students construct a barometer to use in an experiment that they design to measure the air pressure on a daily basis. These observations of air pressure allow students to determine how weather is affected when a storm is approaching and...
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Car Wash
Learners determine the most appropriate site for a car wash, based on each site's soil characteristics (chemical, physical) and topographic features. They perform an experiment to determine the changes to three different soil types when...
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Sea Floor Spreading I
Students use Excel to explore the geodynamics Model equation for ocean depth around a sea-floor spreading center. They complete an introductory tutorial on Excel for students with no prior Excel experience.
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Leaf Pack Study
Learners conduct an experiment using leaf packs. In this leaf lesson students complete an activity in groups and complete a handout.
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Collaboration via Slime Mold
Young scholars combine the skills and concepts that they have developed to ask a simple question which can be answered on a Petri plate. They ask questions and design experiments for verification through collaboration with their classmates.
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Snell's Law (And Then Some)
Young scholars conduct an experiment to test Snell's Law using a block of lucite and a ray box. They measure the light rays as they impinge upon the block. Students are also asked to draw the situation of the lab or create a model of the...
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Constructing Earthquake-Proof Buildings
Students examine different materials and design options that can affect the durability of a building. In this investigative lesson students conduct several earthquake experiments.