In this activity, students investigate different methods (aeration and filtering) for removing …
In this activity, students investigate different methods (aeration and filtering) for removing pollutants from water. They will design and build their own water filters.
This purpose of this task is to help students see two different …
This purpose of this task is to help students see two different ways to look at percentages both as a decrease and an increase of an original amount. In addition, students have to turn a verbal description of several operations into mathematical symbols.
This unit provides pre-service teachers in methods courses with resources for teaching …
This unit provides pre-service teachers in methods courses with resources for teaching geoscience content and utilizing the methods of geoscience. Pre-service teachers will prepare an annotated bibliography of instructional resources in the areas of geology, meteorology/climatology, oceanography, and astronomy. They will select one of these resources and prepare a full lesson plan based on the resource that emphasizes the methods of geoscience and also incorporates interdisciplinary material from either biology, chemistry, physics, or the social sciences.
With a simple demonstration activity, students are introduced to the concept of …
With a simple demonstration activity, students are introduced to the concept of friction as a force that impedes motion when two surfaces are in contact. Then, in the Associated Activity (Sliding and Stuttering), they work in teams to use a spring scale to drag an object such as a ceramic coffee cup along a table top or the floor. The spring scale allows them to measure the frictional force that exists between the moving cup and the surface it slides on. By modifying the bottom surface of the cup, students can find out what kinds of surfaces generate more or less friction. They also discover that both static and kinetic friction are involved when an object initially at rest is caused to slide across a surface.
In this unit, students make regular journal entries about a plant/animal/insect community …
In this unit, students make regular journal entries about a plant/animal/insect community in the natural area around our school and use this to create a Non-fiction Class Book. They also interview family/resources to discover, record and present stories about human relationships with nature from their culture(s).
This activity is an outside the classroom teaching with data experiment. It …
This activity is an outside the classroom teaching with data experiment. It allows students to collect and analyze data in ordet to create a distance versus time graph and calculate average velocity from the graph.
This is an investigation where students observe what happens to land after …
This is an investigation where students observe what happens to land after it is mined. Students will create a hypothesis, observe their model, conclude what happens to land after it is mined, and discover the role humans play in land conservation.
This task asks students to find a linear function that models something …
This task asks students to find a linear function that models something in the real world. After finding the equation of the linear relationship between the depth of the water and the distance across the channel, students have to verbalize the meaning of the slope and intercept of the line in the context of this situation.
The purpose of this task is meant to reinforce students' understanding of …
The purpose of this task is meant to reinforce students' understanding of rational numbers as points on the number line and to provide them with a visual way of understanding that the sum of a number and its additive inverse (usually called its "opposite") is zero.
This task asks students to find equivalent expressions by visualizing a familiar …
This task asks students to find equivalent expressions by visualizing a familiar activity involving distance. The given solution shows some possible equivalent expressions, but there are many variations possible.
This task requires students to recognize both "number of groups unknown" and …
This task requires students to recognize both "number of groups unknown" and "group size unknown" division problems in the context of a whole number divided by a unit fraction.
The purpose of this task is to introduce the idea of exponential …
The purpose of this task is to introduce the idea of exponential growth and then connect that growth to expressions involving exponents. It illustrates well how fast exponential expressions grow.
Students learn about the amazing adaptations of the ptarmigan to the alpine …
Students learn about the amazing adaptations of the ptarmigan to the alpine tundra. They focus one adaptation, the feathered feet of the ptarmigan, and ask whether the feathers serve to only keep the feet warm or to also provide the bird with floatation capability. They create model ptarmigan feet, with and without feathers, and test the hypothesis on the function of the feathers. Ultimately, students make a claim about whether the feathers provide floatation and support this claim with their testing evidence.
This problem allows the student to think geometrically about lines and then …
This problem allows the student to think geometrically about lines and then relate this geometry to linear functions. Or the student can work algebraically with equations in order to find the explicit equation of the line through two points (when that line is not vertical).
This task is designed as a follow-up to the task F-LE Do …
This task is designed as a follow-up to the task F-LE Do Two Points Always Determine a Linear Function? Linear equations and linear functions are closely related, and there advantages and disadvantages to viewing a given problem through each of these points of view. This task is intended to show the depth of the standard F-LE.2 and its relationship to other important concepts of the middle school and high school curriculum, including ratio, algebra, and geometry.
This task requires students to use the normal distribution as a model …
This task requires students to use the normal distribution as a model for a data distribution. Students must use given means and standard deviations to approximate population percentages. There are several ways (tables, graphing calculators, or statistical software) that students might calculate the required normal percentages. Depending on the method used, answers might vary somewhat from those shown in the solution.
Students explore the concept of optical character recognition (OCR) in a problem-solving …
Students explore the concept of optical character recognition (OCR) in a problem-solving environment. They research OCR and OCR techniques and then apply those methods to the design challenge by developing algorithms capable of correctly "reading" a number on a typical high school sports scoreboard. Students use the structure of the engineering design process to guide them to develop successful algorithms. In the associated activity, student groups implement, test and revise their algorithms. This software design lesson/activity set is designed to be part of a Java programming class.
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