Unit 3 Quadratics Relations 1 Worksheet Page 31

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Unit 3 Day 5: Factored Form of a Quadratic
MBF 3C
Description
Materials
BLM 3.5.1 to 3.5.3
Students will connect the zeros of a parabola to the factors in the equation of a
quadratic relation
.
Assessment
Opportunities
Minds On…
Whole Class → Discussion
2
Put an equation of a parabola on the board (for example y = -2(x + 3)
– 10)
and proceeds to ask questions about it: like:
(1) What information can we get from this equation?
[vertex, direction of opening, step pattern]
(2) If we know the vertex, direction of opening, step pattern, what can
we determine?
[a graph of the parabola, axis of symmetry, optimal value]
(3) What are the x-intercepts (zeroes) of the parabola?
[can’t find them, not enough info]
(4) How could you find the zeroes?
[Use the information and graph the parabola to locate zeroes]
At this point allude to how nice it would be if there was an equation that
would show you the zeroes as quickly as the Vertex Form shows you the
vertex.
Action!
Pairs → Investigate
Complete the first page of BLM3.5.1 with the students.
Students continue to investigate the parabola properties from BLM 3.5.1
using TI-83 graphing calculator if so desired
.
Whole Class → Discussion
On overhead or board, review the solutions to BLM 2.5.1
Consolidate
Individuals → Consolidate
Debrief
Students work on BLM 3.5.2
Whole Class → Discussion
On overhead or board, review the solutions to BLM 3.5.2
Home Activity or Further Classroom Consolidation
Application
Students receive BLM 3.5.3 for practice work
Concept Practice

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