Curated OER
Threads
Young scholars group observed data, filtering from all their observations the similarities between burring threads. In the second part they make a comparison of a chosen attribute between the two threads.
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Starch and Sugar Testing 2
Students design and conduct an experiment to determine which of three solutions contain starch or sugar. This task assess students' ability to make simple observations, design simple experiments, utilize indicators, and make generalized...
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Starch and Sugar Testing 1
Eighth graders determine the presence of starch and sugar in unknown solutions. This task assesses students' abilities to observe, record and interpret data, classify, generalize/infer, construct data tables, and identify sugar and...
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Reaction Rates
Students work in groups of 4-6 for the experiment/activity part of this exercise. They base their explanation on what they observed. Students observe how substances react chemically in characteristic ways with other substances to form...
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Paper Chromatography
Students use this design the illustrate how ink can be separated into its component chemicals using paper chromatography. They use five unknown samples of ink on pre-labeled chromatography strips are provided to students. Students use...
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Chemical Changes
Eighth graders observe two types of interactions in a sealed plastic bag. One bag contains baking soda and water, and the other baking soda and vinegar. They determine what evidence indicates that a chemical change is occurring.
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Identifying Elements
Students use diffraction glasses to find similarities and differences between observed spectrum of fluorescent light and an incandescent light They work in groups of 4-6 for the experiment/activity part of this exercise.
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Rubber Band
Eighth graders investigate what would happen to the length of a rubber band as more and more rings were hung on it. They base their explanation on what they observed, and as they develop cognitive skills, they should be able to...
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Changes in Pulse Rate
Eighth graders practice making observations and collecting data after determining a baseline pulse rate then collect data on the changes in that rate with exercise. Students must organize their data and analyze their observations.
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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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Dichotomous Key
Eighth graders use a dichotomous key to identify unknown fictitious organisms. They work individually during this exercise. The task is designed to take students approximately 15-25 minutes to complete.
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Classification of Animals
Sixth graders examine two-way classification systems using four mutually exclusive groups and two dimensions simultaneously. They then are given a set of plastic animals, asked to create a two-way classification system, then asked to...
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The Fault Line
Students use cardboard models of the North American and Pacific plates and sand to investigate what happens when there is an earthquake or movement along the boundaries of the plates.
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Crustal Sinking
Students measure the rate of sinking of a test tube into a beaker of "glop", representing a model of the interaction between the Earth's crust and upper mantle. This task assesses students' abilities to make simple observations,...
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Mapping the Blue Part
Eighth graders determine the location of specific features of the stimulated ocean floor. The features include the continental shelf, continental slope, an ocean trench, and a mid-oceaniz ridge.
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Building Materials
Fifth graders are presented with three rocks and a variety of tools and are asked to investigate the properties of the rocks to see which rock is best for building tables and benches for a museum picnic area.
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Creeping
Students observe, measure, and graph a model of slow down slope movement representing soil creep. This task assesses students' abilities to collect, record, and organize data, set up graph axes, plot data points, draw line graphs, apply...
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Water-holding Capacity of Earth Materials
Students 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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Probing Under the Surface
Eighth graders use a measuring stick to determine the shape of the inside of the bottom of a box, then apply their knowledge to an additional situation. This task assesses students' abilities to make simple observations, collect and...
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River Planning
Students use a model to conduct an experiment involving dam construction. Based on their observations, they draw conclusions about social, economic, and and environmental issues and make a decision concerning dam location. As a group,...
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Soap, Wood, and Water
Students measure the properties of two different types of soap and wood and calculate their densities. Then they predict whether or not whether or not each object would float or sink in fresh or salt water.
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Scale Model of the Solar System
Young scholars work in groups of 4-6 for the experiment/activity part of this exercise. Students know that earth is the third planet from the sun in a system that includes the moon, the sun, eight other planets and their moons, and...
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Wet-Dry Bulb Hygrometers: Measuring Relative Humidity and Apparent Temperature
Pupils work in groups of 4 for the activity/activity part of this exercise. They know that clouds are formed by the condensation of water vapor, affect weather and climate. Also that global patterns of atmospheric movement influence...
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Vitamin C Testing
Pupils determine which of three beverage samples contains the most vitamin C. They then apply their knowledge to an additional situation. Students use beverages that have a large, definite difference of vitamin C content to facilitate...