ALCA Members PLC Domains Data Standards Map Plan Curriculum Assessment Strategies

2.0 Direct Variation

Direct Variation is the second area of study in Algebra I. The Direct Variation unit will introduce the ideas of slope and linear equations. The concept of "parent function" is also explored.

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2.01 The Wave.doc

In the two activities Bleachers and The Wave, students will collect their own data. They will then use that data in the context of proportions and/or direct variation functions to answer questions and make predictions. In The Wave problem, students will also be asked to graph the data and approximate the line of best fit.
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2.02 The Wave (R&A).doc

This is an enrichment activity to follow up "The Wave."
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2.03 Take My Measure

Take My Measure is an activity to study proportional reasoning. It requires a freeware called Scion Image.
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2.04 Proportions Quiz.doc

This is a short quiz over solving proportions.
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2.05 Direct Variation Homework I.doc

This file is a practice assignment over using proportional reasoning. This worksheet also covers some graph interpretation as well as some review of domain and range.
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2.06 Direct Variation.doc

This is the first lesson in the SATEC sequence where the students must establish the scale for the grid before they can graph their ordered pairs. Teachers should walk them through an example and watch closely over their shoulders, as they will struggle with this. Students should be reminded that the dependent variable goes on the y axis and the independent belongs on the x axis, but the grids are already labeled for the students.
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2.07 Direct Variation Homework II.doc

This document is a practice assignment over using proportional reasoning. It also covers some graph interpretation as well as some review of domain and range.
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Direct Variation Unit Test.doc

This file is a unit test over all concepts discussed in the Direct Variation unit.

2.0 Direct Variation

Algebra I Content