Which homework exercises should I discuss on the board?
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Slide 1: Mind map
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This lesson contains 10 slides, with interactive quizzes and text slides.
Lesson duration is: 50 min
Items in this lesson
Which homework exercises should I discuss on the board?
Slide 1 - Mind map
More on coordinates
Point (0,0) is called the origin. It is often indicated with the letter O. It is the point of intersection between the horizontal and vertical axis.
Slide 2 - Slide
More on coordinates
If an axis does not start at zero, you should use a zigzag.
(the book often forgets to do this!)
Slide 3 - Slide
More on coordinates
Points (0,8), (1,6) and (4,0) are called grid points, because they lie on the vertices of the grids of the paper. Points (5.5, 2), (5.5, 3) and (6, 5) are NOT grid points, because they do NOT lie on the vertices of the grids
Slide 4 - Slide
Reading graphs
Graphs show a relation between two variables. In this graph there is a relation between the time and the temperature. The variables are given at the horizontal and vertical axes.
The graph can rise, stay constant, or fall.
Slide 5 - Slide
The variables are given on the axes. Each variable is given in a certain unit.
Variables can be given in a certain unit. If you change the unit, the graph stays the same, only the axes change. For example, the variable time can be given in the unit hours or minutes or days or years, etc.
Slide 6 - Slide
Is point (13, 55) in the graph of exercise 4 a grid point?
A
Yes
B
No
Slide 7 - Quiz
What is the VARIABLE given on the vertical axis at exercise 1?
A
height
B
cm
C
time
D
hours
Slide 8 - Quiz
What is the UNIT used on the horizontal axis in exercise 4?
A
humidity
B
%
C
time
D
days
Slide 9 - Quiz
Homework Tuesday
Make and correct: 7, 8, 10, 11, 12, 14 and 16 from §3.2 and §3.3