Developing Teaching & Learning Module-

Integrating The Usage Of Graphic Calculator In

Teaching And Learning Mathematics Activity.

Pengenalan kepada bentuk graf kuadratik apabila nilai a berubah dengan menggunakan kalkulator TI Nspire.

TOPICQUADRATIC FUNCTIONS

SUB-TOPICS QUADRATIC FUNCTIONS AND GRAPHS

LEARNING OBJECTIVE

• Understand the concept of quadratic functions and their graphs.

LEARNING OUTCOME

Students will be able to...

• Recognize the shapes of graphs of function y = ax2

21st Century Skills

• Collaboration• ICT for learning• Problem solving & innovation (creativity)

ACTIVITY-Steps

Repeat step 1,2,3 and 4 for other quadratic functions.

Soalan Penyiasatan (analisis,sintesis dan evaluasi)

Soalan Penyiasatan (analisis,sintesis dan evaluasi)

1. Describe the effect on the graph y = ax2 as the value of a

varies?

For a > 0,

• The parabola opens upwards.

• The vertex is the lowest point.

• If the value of a is decreased, the shape of the graphs become wider.

• If the value of a is increased, the shape of the graphs become narrower.

Soalan Penyiasatan (analisis,sintesis dan evaluasi)

For a < 0,• The parabola opens downward.• The vertex is the highest point.• If the value of a is decrease, the shape of the

graphs become wider.• If the value of a is increase, the shape of the

graphs become narrower.

Soalan Penyiasatan (analisis,sintesis dan evaluasi)

Soalan Penyiasatan (analisis,sintesis dan evaluasi)

2. What happens when a approaches zero ?

When a approaches zero, the graph appear to be a straight line.

3. What happens when the value of a changes to negative?

When the values of a changes to negative, the straight line becomes a parabola again but concaves downward.

CRITICAL THINKING SKILLS - Analyse, Evaluate, Predict,