Wednesday
Wednesday: Lines and shapes
Ferris the Fox spreads his trail map across a flat rock.
"Look, these two paths run side by side and never meet," he says.
"Those are parallel," says Bennie the Bear. "And this path crosses the creek at a square corner."
"Then the path and the creek are perpendicular," Ferris says slowly, trying the new word.
Bennie points to the shapes drawn on the map: a cabin, a dock and a tent.
"We can sort shapes by their lines and their angles," he says. "Let us try."
Learn it: points, lines and rays
A point is an exact spot. A line goes on and on in both directions.
A line segment is part of a line with two endpoints. A ray has one endpoint.
Parallel lines never meet. They stay the same distance apart.
Perpendicular lines meet to make a right angle.
Intersecting lines cross at a point.
We sort shapes by parallel sides, perpendicular sides and right angles.
A right triangle is a triangle with one right angle.
- Read the question.
- Tap your answer.
What kind of lines are these?What kind of lines are these?What kind of lines are these?- Read the question.
- Tap your answer.
How many pairs of parallel sides does this shape have?
How many pairs of parallel sides does this shape have?
How many pairs of parallel sides does this shape have?
How many right angles does this shape have?How many right angles does this shape have?- Read the question.
- Tap your answer.
- Count the pairs of parallel sides.
- Tap them from fewest to most.
| Sentence | True or false? |
|---|---|
| Parallel lines never meet. | ? |
| Perpendicular lines meet at a right angle. | ? |
| A ray has two endpoints. | ? |
| A square has 4 right angles. | ? |
| A right triangle has 2 right angles. | ? |
Find 2 parallel lines, like the edges of a door.
Find 2 perpendicular lines, like the corner of a window.
Find a shape with no right angles at all.
Super sorting! Tomorrow Chris tells a story about folding.