(7th) Direct Variation in a PowerPoint Presentation

7th Grade Math Direct Variation in a PowerPoint Presentation

This slideshow lesson is very animated with a flow-through technique. I developed the lesson for my 7th grade class, Pre-Pre-Algebra, but it can also be used for upper level class reviews. This lesson teaches how to identify direct variation from graphs or equations, and use direct variation models to solve problems, and solve real-life situations by interpreting slope as a constant of variation like in the parachute problem.

This lesson has SKELETON NOTES, notes that have the problem only. I used this with our 1-1 district devices. This will allow for the students to follow the lesson easier. There are 6 slides per page with plenty of room for notetaking. They are in a pdf format for easy printing too. A Word document is included for you to EDIT if you won’t be doing all of the problems so you can shorten it. I also made another version of skeleton notes that is only one or two sheets long in a pdf. When I printed off skeleton notes for the whole class this is what I used. It is also editable so you can delete the problems and rearrange the skeleton notes however you want.

NEW: The lesson is in an editable format so you can tailor the lesson to your class. The problems and clipart can’t be edited due to the TOU and to maintain the copyright integrity of the product. If you need an alternative version because your country uses different measurements, units, or slight wording adjustment for language differences just email me at PrestonPowerPoints@gmail.com. I am respond to email quickly.

The presentation has 54 slides with LOTS of whiteboard practice. Use as many or as few of the problems to help your students learn each concept. For more PowerPoint lessons & materials visit Preston PowerPoints.

Students often get lost in multi-step math problems. This PowerPoint lesson is unique because it uses a flow-through technique, guided animation, that helps to eliminate confusion and guides the student through the problem. The lesson highlights each step of the problem as the teacher is discussing it, and then animates it to the next step within the lesson. Every step of every problem is shown, even the minor or seemingly insignificant steps. A helpful color-coding technique engages the students and guides them through the problem (Green is for the answer, red for wrong or canceled numbers, & blue, purple & sometimes orange for focusing the next step or separating things.) Twice as many examples are provided, compared to a standard textbook. All lessons have a real-world example to aid the students in visualizing a practical application of the concept.

This lesson applies to the Common Core Standard:

Ratios & Proportional Relationships 7.RP.2a, 7.RP.2b, 7.RP.2c, 7.RP.2d

Analyze proportional relationships and use them to solve real-world and mathematical problems.

2. Recognize and represent proportional relationships between quantities.

a. Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.

b. Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.

c. Represent proportional relationships by equations. For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.

d. Explain what a point (x, y) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1, r) where r is the unit rate.

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This resource is for one teacher only. You may not upload this resource to the internet in any form. Additional teachers must purchase their own license. If you are a coach, principal or district interested in purchasing several licenses, please contact me for a district-wide quote at prestonpowerpoints@gmail.com. This product may not be uploaded to the internet in any form, including classroom/personal websites or network drives.

*This lesson contains 29 problems. Each problem in this lesson uses several pages in order to achieve the animated flow-through technique.