Curated OER
Where in the World is Carbon Dixoide?
Students conduct experiments designed to detect the presence of CO2 by using a BTB that changes color (blue to yellow) in the presence of CO2. First, students experiment with the CO2 from combining vinegar and baking soda. In part two,...
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Investigating the Soil
Students explore the Earth's crust by researching pH levels and acidity. In this environmental safety lesson, students identify the pros and cons of acidity within soil and how it affects plants. Students collaborate in a pH level...
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What is a Karst
Students investigate landforms by holding a class experiment. In this topography lesson, students define the word "karst" and discover why sinkholes are created on the surface of the Earth by completing worksheets. Students create a...
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Teaching about Conductivity
High schoolers explore conductivity and productivity in aquatic systems.
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Acids and Bases
In this acid and base worksheet, students are given terms related to acids and bases and their definitions. Students match the proper definition to the terms but cutting out the definitions and gluing them next to the proper term.
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Perimeter, Area, and Volume
In this geometry learning exercise, 10th graders determine the perimeter, area, or volume of the indicated figure. The five page learning exercise contains a combination of twenty-two multiple choice and free response...
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Quadratic Inequalities
In this quadratic inequalities worksheet, students graph six quadratic inequalities. They solve two quadratic inequalities to identify one solution. In this quadratic inequalities worksheet, students draw the parabola and shade inside or...
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Move It!
Students explore the notion that simple devices can help us move objects when an understanding of forces is applied. They apply the design process, make predictions, draw sketches, make a model and evaluate their solution.
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Rules for Balancing REDOX Equations: (Half-Reaction Method)
In this chemistry worksheet, students read the instructions of how to work with the following: acidic and basic solutions, total and net ionic equations, and how to relate these to each other.
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Chemical Reactions
In this chemical reactions worksheet, students determine if solutions are acidic, basic, or neutral. Students give reactions' molecular equations and ionic equations. This worksheet has 14 problems to solve.
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Making Soap
Students recognize and use chemical indicators in the lab, recognize the need for safety while doing chemical experiments and understand the need for following precise directions.
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Introduction to Neutraliization
Learners explore acids and bases and the process of neutralization.T hey practice volume measurements and observe the neutralization of an acid
directly through bubble formation and indirectly through indicator color changes.
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Water Ph
Eighth graders study the concepts of acids, bases, salts and neutralization. They discuss steam adoption program, acid rain and other ecological implications. They use indicators to obtain pH values of household chemicals and to...
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Solving Square Root and Other Radical Equations
In this Algebra II worksheet, 11th graders solve equations involving radical equations. The worksheet provides an explanation and worked examples. The two page worksheet contains three problems. Solutions are not...
Creative Chemistry
Identifying Anions
In this anions worksheet, high schoolers are given a table showing nine anions, the test that indicates the presence of each anion, and what will be observed when each substance is added to the anion.
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Worksheet 31
In this math worksheet, students find the solutions to the differential equations. They also investigate the application of recognizing the parts of the equation.
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Measuring pH
Students perform an experiment which will illustrate how to measure the approximate pH of chemicals in water using a pH indicator. They understand that a pH indicator is a chemical that changes color when it comes in contact with acids...
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Worksheet 34
In this math activity, students are given terms from the Fourier sine or cosine series. They solve for the corresponding term that is in the solution u(x,t). Boundaries are specified. Three application problems follow the terms.
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General MacArthur's Favorite Number Game
In this secondary mathematics worksheet, students examine the algebra behind the solution of General MacArthur’s favorite mathematics trick. The one page worksheet contains one problem with the solution.
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The Island Problem
For this secondary mathematics worksheet, students explore a logic problem in which a traveler must determine the correct question to ask a native in order to determine which fork in the road leads to safety. The one page worksheet...
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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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Solving Quadratic Equations with Complex Roots
In this quadratic equations worksheet, students solve 10 different equations that include complex roots. First, they solve for the indicated variable and express the roots of the equation in simplest form. Then, students determine the...
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Worksheet 35
In this math worksheet, students write a problem having solution u(x, t) for each function u given. They include the lengths, physical constants, and initial conditions.
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Plasmolysis in Elodea Plant Cells
Young scholars microscopically observe various subcellular components. They determine the effects of different salt solutions on Elodea plant cells. Students explain the major function of a cell membrane and describe its structure.