Te Kete Ipurangi Navigation:

Te Kete Ipurangi
Communities
Schools

Te Kete Ipurangi user options:

Level Three > Geometry and Measurement

Parking Meters

Keywords:
Achievement Objectives:

Achievement Objective: Use linear scales and whole numbers of metric units for length, area, volume and capacity, weight (mass), angle, temperature, and time.

Specific Learning Outcomes: 

Calculate using units of time and money

Communicate their reasoning clearly and using the correct units.

Devise and use problem solving strategies to explore situations mathematically (be systematic)

Description of mathematics: 

This is a practical problem relating to both time and money. The students have to know the value of 50c + 20c as well as how many lots of 10c that is. Then they have to multiply the basic unit of 15 minutes by that amount. Finally that time period has to be added to the time.

Required Resource Materials: 
Copymaster of the problem (English)
Copymaster of the Problem (Māori)
Activity: 

Problem

In parking meters, downtown, you can get 15 minutes parking for 10c. Dad put a 20c and a 50c piece into the parking meter at 3.15pm. At what time did the parking meter expire?

Teaching sequence

  1. Introduce the problem with a short discussion about parking.
    How much does it cost? Has your car ever been towed away? Have you ever been given a parking ticket?
  2. Give the students the problem to solve with a partner. As they work ask questions that focus on the strategies they are using to make the calculations.
    How did you work that out?
    How can you convince me that you are correct?
    Can you think of another way to solve the problem?
  3. Ask the students to record their solution so that others could be convinced that they were correct.
  4. Share the records. Dicuss whether the students have used digital or analogue time.

Extension to the problem

Get the students to write their own parking meter problem for others to solve.

Solution

50c + 20c = 70c. 70c = 7 x 10c. 7 x 15 minutes = 105 minutes. 105 minutes = 1 hour and 45 minutes. 3:15 + 1:45 = 5:00. So Dad can park in the car park up until 5 pm.

AttachmentSize
Parking.pdf39.28 KB
ParkingMaori.pdf52.52 KB

Similar Resources

Adam's Watch

use an analogue clock to tell the time

apply logic to a problem involving time

devise and use problem solving strategies to explore situations mathematically (use a diagram, be systematic)

Time Problems

Understand how positive and negative numbers can be used in an unusual practical problem.

Devise and use problem solving strategies to explore situations mathematically (guess and check, be systematic, look for patterns, draw a diagram, make a table, use algebra).

4c and 7c Stamps

Describe what it means for a sequence to carry on infinitely;

Look for patterns using linear combinations of 4 and 7.

5c and 9c Stamps

Describe what it means for a sequence to carry on infinitely

Look for patterns in linear combinations of numbers

Devise and use problem solving strategies (guess and check, make a table, look for patterns)

3c and 5c Stamps

Describe what it means for a sequence to carry on infinitely;

Look for patterns in combinations of numbers.