What do we call the dot along a line?
What does a point indicate?
A location in space.
How many rays do we see in part 1? Explain.
4 rays. There are 2 rays on the line. There are 2 rays in the angle.
Are the rays in the angle parallel or perpendicular? How do we know?
Perpendicular. The rays meet at a right angle.
Compare a line and a ray. How can we tell the difference?
A ray is part of a line. A ray has an arrow on 1 end. It goes on forever in 1 direction. A line has arrows on both ends. It goes on forever in both directions.
What is the distance from zero to 1 on the number line in part 2?
If the snail moves along the number line and stops above the 3, how far has it moved?
What distance does the point at 6 represent?
The distance from zero to 6, or 6 units.
What are the key attributes of a number line?
Answers vary; encourage responses concerning the numbers needing to be spaced at equal intervals.
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