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.
If the snail moves along the number line and stops above the 3, how far has it moved?
3 units.
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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