Fri – 16th Mar – Solving Quadratics that do not factorise using the ‘Quadratic Formula’

LEARNING OBJECTIVE: TO solve quadratic equations using the quadratic formula

SUCCESS CRITERIA: You will be able to solve equations that DO NO factorise using the quadratic Formula

ENGAGEMENT ACTIVITY:

Use these values to work out what these expressions are equal to:

a = 3, b = -2, c = -4, d =-½

1. ab + c
   
2. a(b - c)
   
3. a + b + c
   
4. bc + ac
   
5. abc/d
   
6. ad(c – b)
   
7. cd – ab
   
8. abc – b + c +d
   

LESSON: Work through Quadratic Formula Lesson, use question screens over and over again to give lots of practice in using the formula. Give students a chance to solve all questions on final screen

Have a go at Ex 20J page 226 of Higher Text Book

PLENARY: Checking answers, exam question if time