__Activity 5. Applications Utilizing the Concepts__

These concepts apply to real life situations. Here is asimple example:

Use the tool SimulateousEqn.xls, which displays the graphfor simultaneous equations.

Do This:

NOTE: To complete a change to the tool press the enter keyafter typing the new value.

Write an equation to express the following situationalgebraically:

Magix Pens at Friendly’s Supermarket are sold at $4.00 each.

Example: Write anequation to model the cost in buying Magix Pens at Friendly’s:

y = 4x

At Cheapee’s Store, Magix Pens cost $2.00 each.

a.

b.

c.

d.

(1)

(2)

(3)

(4) Algebraicallysolve the cost of buying one Magix Pen from each store respectively, and thenexplain how you can find the answer by simply examining the graph lines

(5)

(6)

(7)

(8)

TEACHER NOTES

This lesson incorporates the following teaching strategiesbases on the NCTM standards.

- Technology integration
- Interactive learning
- Concept-building through discovery
- Actively building new knowledge from experience and prior knowledge
- Discourse in mathematics
- Formulate explanations
- Mathematical literacy
- Using modeling to solve problems
- Making connections by investigating various models
- Promoting mathematics as a tool for solving real life problems

In addition the lesson meets the following technologyguidelines specified by

- Using technology in context
- Applying technology to meaningful problems
- Employing technology to improve pedagogy
- Connect mathematical topics
- Use multiple representations