Lesson plan that uses students' step length to understand the relationship between …

Lesson plan that uses students' step length to understand the relationship between distance, speed and acceleration. Includes graphing of data and interpretation of graphs.

This is a PBL lesson where students explore the Physics behind motion …

This is a PBL lesson where students explore the Physics behind motion of objects. Students will collaborate and come up with a video showing the difference between distance and displacement, speed and velocity and acceleration. In this remix, students are given options and choices that relate to their interest.

This is a PBL lesson where students explore the Physics behind motion …

This is a PBL lesson where students explore the Physics behind motion of objects. Students will collaborate and come up with a video showing the difference between distance and displacement, speed and velocity and acceleration.

Students build their own small-scale model roller coasters using pipe insulation and …

Students build their own small-scale model roller coasters using pipe insulation and marbles, and then analyze them using physics principles learned in the associated lesson. They examine conversions between kinetic and potential energy and frictional effects to design roller coasters that are completely driven by gravity. A class competition using different marbles types to represent different passenger loads determines the most innovative and successful roller coasters.

In this lesson, students will learn that forces can change the speed …

In this lesson, students will learn that forces can change the speed or direction of motion. Students will observe what happens to a toy car as it moves down a ramp and then encounters "speed bumps" that are added at different lengths away from the ramp. Students will also add a clay figure to the top of the cars to see what effect the ramp and "speed bumps" will have on the figure.

Student groups are provided with a generic car base on which to …

Student groups are provided with a generic car base on which to design a device/enclosure to protect an egg on or in the car as it rolls down a ramp at increasing slopes. During this in-depth physics/science/technology activity, student teams design, build and test their creations to meet the design challenge, and are expected to perform basic mathematical calculations using collected data, including a summative cost to benefit ratio.

Students work as engineers and learn to conduct controlled experiments by changing …

Students work as engineers and learn to conduct controlled experiments by changing one experimental variable at a time to study its effect on the experiment outcome. Specifically, they conduct experiments to determine the angular velocity for a gear train with varying gear ratios and lengths. Student groups assemble LEGO MINDSTORMS(TM) NXT robots with variously sized gears in a gear train and then design programs using the NXT software to cause the motor to rotate all the gears in the gear train. They use the LEGO data logging program and light sensors to set up experiments. They run the program with the motor and the light sensor at the same time and analyze the resulting plot in order to determine the angular velocity using the provided physics-based equations. Finally, students manipulate the gear train with different gears and different lengths in order to analyze all these factors and figure out which manipulation has a higher angular velocity. They use the equations for circumference of a circle and angular velocity; and convert units between radians and degrees.

A gear is a simple machine that is very useful to increase …

A gear is a simple machine that is very useful to increase the speed or torque of a wheel. In this activity, students learn about the trade-off between speed and torque when designing gear ratios. The activity setup includes a LEGO(TM) MINDSTORMS(TM) NXT pulley system with two independent gear sets and motors that spin two pulleys. Each pulley has weights attached by string. In a teacher demonstration, the effect of adding increasing amounts of weight to the pulley systems with different gear ratios is observed as the system's ability to lift the weights is tested. Then student teams are challenged to design a gear set that will lift a given load as quickly as possible. They test and refine their designs to find the ideal gear ratio, one that provides enough torque to lift the weight while still achieving the fastest speed possible.

Students are introduced to gear transmissions and gear ratios using LEGO MINDSTORMS(TM) …

Students are introduced to gear transmissions and gear ratios using LEGO MINDSTORMS(TM) NXT robots, gears and software. They discover how gears work and how they can be used to adjust a vehicle's power. Specifically, they learn how to build the transmission part of a vehicle by designing gear trains with different gear ratios. Students quickly recognize that some tasks require vehicle speed while others are more suited for vehicle power. They are introduced to torque, which is a twisting force, and to speed the two traits of all rotating engines, including mobile robots using gears, bicycles and automobiles. Once students learn the principles behind gear ratios, they are put to the test in two simple design activities that illustrate the mechanical advantages of gear ratios. The "robot race" is better suited for a quicker robot while the "robot push" calls for a more powerful robot. A worksheet and post-activity quiz verify that students understand the concepts, including the tradeoff between torque and speed.

Students construct a model roadway with congestion and apply their knowledge of …

Students construct a model roadway with congestion and apply their knowledge of level of service (LOS) to assign a grade to the road conditions. The roadway is simply a track outlined with cones or ropes with a few students walking around it to mimic congestion. The remaining students employ both techniques of density and flow to classify the LOS of the track.

The Gravity Assist Simulator takes you through a series of simulated collisions …

The Gravity Assist Simulator takes you through a series of simulated collisions to show how the New Horizon and Messenger spacecraft will use planned collisions to extend their missions.

Students engage in the second design challenge of the unit, which is …

Students engage in the second design challenge of the unit, which is an extension of the maze challenge they solved in the first lesson/activity of this unit. Students extend the ideas learned in the maze challenge with a focus more on the robot design. Gears are a very important part of any machine, particularly when it has a power source such as engine or motor. Specifically, students learn how to design the gear train from the LEGO MINDSTORMS(TM) NXT servomotor to the wheel to make the LEGO taskbot go faster or slower. A PowerPoint® presentation, pre/post quizzes and a worksheet are provided.

Students will experience force and speed by constructing model cars in cooperative …

Students will experience force and speed by constructing model cars in cooperative groups. The students will explore ways to move their cars at different speeds. Each group will create a PhotoStory describing their cars.

This lesson is the first of a two-part series on the science …

This lesson is the first of a two-part series on the science of hurricanes and the kinds of technology being used to identify and track them. In this activity students examine different scientific aspects of hurricanes, all in an effort to begin to understand the nature of motion?particularly how changes in speed or direction of motion are caused by forces.

This lesson is the second in a two-part series on the science …

This lesson is the second in a two-part series on the science of hurricanes and the kinds of technology being used to identify and track them. In this activity students? study of hurricanes is broadened by exploring how technology and science are used today to identify, measure, and track powerful tropical storms to better warn and secure people from their often-devastating impact.

In this activity students will investigate the paths that marbles take once …

In this activity students will investigate the paths that marbles take once set into motion and then how to change those paths, noting if and how they change.

In this lab activity, students investigate the concept of frame of reference …

In this lab activity, students investigate the concept of frame of reference by observing, describing and drawing the same walking motion from different positions. Additionally, they determine the effect of frame of reference on the walking time. Students analyze their data and observations and develop a working definition of the concept of frame of reference. A description of the lab report format is provided.

Students study the motion of objects by brainstorming and experimenting with the …

Students study the motion of objects by brainstorming and experimenting with the different ways that a ping-pong ball can move. They will then create a structure that can be used to move an object from one place to another. They are encouraged to observe and test their structures, revising them as needed.

Rate Type of Unit: Concept Prior Knowledge Students should be able to: …

Rate

Type of Unit: Concept

Prior Knowledge

Students should be able to:

Solve problems involving all four operations with rational numbers. Understand quantity as a number used with a unit of measurement. Solve problems involving quantities such as distances, intervals of time, liquid volumes, masses of objects, and money, and with the units of measurement for these quantities. Understand that a ratio is a comparison of two quantities. Write ratios for problem situations. Make and interpret tables, graphs, and diagrams. Write and solve equations to represent problem situations.

Lesson Flow

In this unit, students will explore the concept of rate in a variety of contexts: beats per minute, unit prices, fuel efficiency of a car, population density, speed, and conversion factors. Students will write and refine their own definition for rate and then use it to recognize rates in different situations. Students will learn that every rate is paired with an inverse rate that is a measure of the same relationship. Students will figure out the logic of how units are used with rates. Then students will represent quantitative relationships involving rates, using tables, graphs, double number lines, and formulas, and they will see how to create one such representation when given another.

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