Dora DePaolis

AIS 7: Math

Aim: How do we determine if fractions are in their simplest form?

Do Now: Solve fraction problem ¼ + ¼

Objectives:

Identify the steps necessary to simply fractions using a calculator

Use visual aids to solve fraction problems involving addition and subtraction

Math Common Core Learning Standards 7.EE

Solve real-life and mathematical problems using numerical and algebraic expressions and equations. Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically.

Materials: SmartBoard Presentation

Procedures:

Take attendance

Do Now Activity: Solve ¼ + ¼ with visual cue

o Review meaning of numerator & denominator & how they relate to the corresponding

image

Use image to illustrate equivalent fractions

o Review meaning of numerator & denominator & how they relate to the corresponding

image

o What do all of these fractions have in common?

Define “Simplest form” and “Simplify” as these terms relate to fractions

Run through steps necessary to simplify fractions on the calculator, using graphics of the

classroom calculator

o Not all fractions will need to be reduced; some answers must be reduced

multiple times

Display addition problems & visual cues on SmartBoard that require simplification

o Teacher models solving the first problem

Attempt to simplify – not required

o As a class, solve the second problem & simplify answer

o Repeat as necessary, or ask student to attempt next three questions on their

own. Answers are shared with the class.

Display subtraction problems & visual cues on SmartBoard that require simplification

o Can we simplify answers to subtraction problems?

o Remind students – any type of problem (addition, subtraction, multiplication,

division) may require simplification

o As a class, solve the second problem & simplify answer

o Ask students to solve next problem & simplify answer

Ask students to work with a partner to complete fraction addition & subtraction

worksheets

o Circulate among groups and check answers.

o If student teams complete the worksheets early, they can work on the

simplification worksheet

Key Question:

What steps must be follow to reduce fractions using a calculator?

Conclusion:

Review key vocabulary

Answer any remaining questions the students may have

Assessment

Students’ verbal responses