Students’ age range: 12-14

Topic: Substituting a numeral for a symbol

 

Description: Teacher will write the objectives on the board

Step1: Students will be asked to sit in pairs. Each student in a pair will be given a card with a problem. For example

If x = 2, y = -3 and z = 4, calculate the value of 3x + 2y + z and 4x + 3y – 2z

Each student will work on a problema and then exchange cards and work on the other problem.

Step 2: After completing these problems they will discuss what they did (steps taken) to solve the problem and any área that they had to pay close attention to.

Step 3: Selected pairs will then be asked to share their results with the entire class. Other students will agree or disagree and give suggestions

Teacher will facilítate and make any necessary clarification.

Step 4: Students will do other related activites from text: Mathematics A Complete Course with C.X.C. Questions Volume 1 By Raymond Toolste. Pp 232 Ex. 6b #41, 46 and 47