Curated OER
The Floating Egg Problem
This is the grown-up version of the classic "float an egg in salt water" experience, plus an experiment in soap making. High schoolers explore density, but more importantly, practice accuracy, precision, and the use of significant...
Curated OER
Hydrogen Peroxide Analysis
A scenario is presented for chemistry techs to address. Using titration techniques, they must analyze hydrogen peroxide solution samples. They evaluate accuracy and precision in the process. They also gain experience consulting the MSDS...
Curated OER
Gas Law Investigation
Investigators collect the carbon dioxide produced when an antacid tablet is activated and identify what alteration produced the most gas. They also collect the gas in a buret in order to practice precision. Then they choose between two...
Curated OER
Scientific Data: It's Not as Pretty as It Looks!
The difference between accuracy and precision is fundamental for high school science learners. Using test kits for nitrate concentration in water, they compare readings with each other. They consider the accuracy, precision, and bias of...
Curated OER
Measure Twice
Learners measure a variety of objects using the appropriate measuring tool. In this measurement lesson, students explain the importance of accuracy and precision in collecting data. They discuss the difference between the two.
Las Cumbres Observatory
Calculating the Age of Solar System Objects
The number of craters on the surface of solar system objects has a direct correlation to its age. Learners use the concept to determine the age of several objects in the solar system. Using satellite images, they count craters within a...
Curated OER
Navigating by the Numbers
Students observe how math is important in navigation and engineering. They study how surveyors use math and science to calcute, count, measure, label, and indicate distances on a map. They estimate specific distances.
University of Georgia
Freezing and Melting of Water
Examine the behavior of energy as water freezes and melts. An engaging activity provides a hands-on experience to learners. Collaborative groups collect data and analyze the graphs of the temperature of water as it freezes and then...
Curated OER
Investigating the Effect Of Successive Heat and Cool Cycles on a Thermoplastic material.
Students investigate hot melt glue using a hot melt glue gun as an an injection molding simulator and a melt index viscometer. They evaluate the effect of heating and cooling by weighing the glue extruded over a constant time period.
Curated OER
Atomic Absorption Determination of Zinc and Copper in a Multivitamin
Advanced lab apprentices prepare zinc and copper solutions to which they will compare the same minerals from a multivitamin. Using absorption spectroscopy, they analyze the contents of the multivitamin for concentration. This lab can be...
Curated OER
Portable Sundial
Students work together to identify the accuracy of sundials. They track the position of the sun and create a shadow plot. They discover the difference between real time and clock time.
Curated OER
Properties of Matter
Third graders explore forms of matter through reading, hands-on science activities, and research using the Internet. Students create a booklet, directions given, that they title and decorate, to later serve as a review visualization...
Curated OER
Water and Polymers
Students conduct qualitative and quantitative investigations based on the interaction between water and various polymers. They determine the percent moisture contained in various plastics along with a qualitative procedure to determine...
Curated OER
The Study of Molecular Orientation by Linear Dimension Change of Polymeric Films
Students investigate the linear dimension change of heated plastic film and relate the results to processing and service use of the materials. They calculate percent change in dimension as related to anisotropy and molecular reorientation.
Curated OER
Computer Accuracy
Students work together on computers to practice measuring for navigation. They discover that errors in their calculations can lead them in the wrong direction. They examine the need of computers by engineers.
Curated OER
Schoolyard Bird Project
Students observe and count bird sightings around their schoolyard throughout the school year.
Curated OER
Super Gelatin
Students investigate the refraction properties of gelatin to calculate its index of refraction. They discover that as the light travels through the gelatin, its speed and wavelength also change. Students find th indes of refraction of an...
Curated OER
Using the Hunter Model and the Holistic Model
Students increase their knowledge of scientific processes in chemistry. They compare and analyze 3 sets of data, they have gathered, for accuracy and precision.
Curated OER
Anastasia-Dead or Alive
Students complete an investigative activity that requires them to use precise observational skills. They observe a partner's ear recording pertinent data so that they can make a positive identification. They identify the teacher chosen...
Curated OER
The Effects of Temperature Variations on the Heartbeat Rate of Daphnia
Young scholars use DigiScope technology to investigate Daphinia, popularly known as water fleas. They design, conduct, and report on an experiment to determine the effects of varying water temperatures on the heartbeat rate of Daphnia.
Curated OER
The Universe
Students describe what scientists mean by an "expanding universe" in their own words. They explain how scientists comprehend the universie is expanding. Students comprehend the vast scale of the universe. They comprehend how theory...
Curated OER
Gettysburg Rocks Recycle to Win
Eighth graders use a geologic cross section to study the rock cycle of the Gettysburg battlefield. In this rock cycle lesson, 8th graders connect the rock cycle and continental rifting.
Curated OER
Morphing
Pupils examine how organisms adapt to their environment in order to survive. As a class, they discuss the extinction of the dinosaurs and review Darwin's theory of survival of the fittest. They select an animal to morph in the future and...
Curated OER
Plants and Animals Depend Upon One Another
First graders study plants and animals and how they depend on one another. They also study that plants give energy to animals and provide oxygen needed for life. Finally, 1st graders give examples of the roles plants and animals play...