Calculating Velocity Practice
Lesson 2 of 6
Objective: Students will be able to practice calculating the velocity of an object before they gather this data in a lab setting.
This lesson is based on California's Middle School Integrated Model of NGSS.
MS-PS2 Motion and Stability: Forces and Interactions
PE: MS-PS2-2 - Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.
DCI: PS2.A: Forces and Motion: All positions of objects and the directions of forces and motions must be described in an arbitrary choose reference frame and arbitrary chosen units of size. In order to share information with other people, these choices must also be shared.
Science and Engineering Practices 3: Planning and Carrying Out Investigations - Collect data about the performance of a proposed object, tool, process or system under a range of conditions.
Crosscutting Concept 4: Systems and System Models - Create a small-scale artificial system isolating variables (distance and time) to calculate real-world measurements, such as velocity and acceleration.
The order of instruction is as follows:
- Car and Ramp - Student Practice
- Calculating Velocity Practice
- Car and Ramp - Calculating Velocity
- Calculating Acceleration Practice
- Car and Ramp - Calculating Acceleration
This lesson is designed as reenforcement to using the Velocity Formula. Students will practice using the formula while building a 'foldable' in their Science Interactive Notebook. Students will spend more time working with the formula if the activity in engaging and fun.
This lesson is designed to reinforce the velocity formula:
where V represents velocity, d represents distance, and t represents time. I've taken a fairly standard worksheet type lesson and mixed it with foldable concepts from Dinah Zike and had my students insert it into their Science Interactive Notebook. Using these 'foldables' turns a boring worksheet into a fun graphic organizer.
To turn an everyday worksheet into a Science Interactive Notebook Foldable you must copy the Speed Word Problems worksheet onto one side only, the back side must be blank if the foldable is to work correctly. Fold the worksheet into half lengthwise, then fold that half into half again. You are now looking at a quarter sheet of paper, see video above.
Glue one of the blank quarters onto the student's interactive notebook. Any side will do as long as the back side that is glued to the notebook is blank, students may have their foldables open in different directions, but that's okay.
TIP: I have found that white glue works better that glue sticks.
The top of the page has a title: 'Speed Word Problems'. The front quarter of the worksheet has a example speed word problem and a copy of the formula. I have my students design their own example problem and write their own steps to solve these problems, this allows each student ownership in solving the work. They must first write this all out on scratch paper before they build their final copy in their notebook. When the worksheet is folded open to the half sheet the student's steps should be visible.
Steps (example only)
- Underline distance and time.
- Write the formula.
- Plug the numbers not the formula
- Include the correct label.
When the worksheet is opened to reveal the entire sheet, each word problem should show all the steps from above and a correct answer.
Student Work Sample
To help teach this concept I have included a Powerpoint lesson: Velocity.