Give this before the unit. It doesn't test the new standards (7.G.B.5 and 8.G.A.5). It checks the grade 4, 6 and 7 skills they build on, so you can see who is ready and what to review first. It isn't meant to be graded. The answer key, with what each part tells you and how to reteach it, prints on its own page after it.
Before we start: in the Laser Heist you'll aim lasers by finding angles. This page shows what you already know about angles and lines. It's fine if some of it is new. Try every question, show your thinking, and after each part circle how sure you feel.
Part A: Measuring angles 4.MD.C.5, 4.MD.C.6, 4.G.A.2
1. What does the angle measure?
angle = °
2. A laser spins all the way around once. How many degrees does it turn? How many in half a turn? A quarter turn?
full ° half ° quarter °
3. Name each angle: acute, right, obtuse or straight.
a)
b)
c)
d)
How sure do you feel? Not yetA littleI've got it
Part B: Kinds of lines 4.G.A.1
4. Label each pair: parallel, perpendicular, or crossing (not at a right angle).
a)
b)
c)
5. On this map, which two roads are parallel? Is the diagonal avenue parallel to them? How can you tell?
How sure do you feel? Not yetA littleI've got it
Part C: Angles add up 4.MD.C.7
6. How big is the whole angle?
whole = °
7. The whole angle is 90°. Find the missing part.
? = °
8. Three angles sit side by side on a straight line. Two of them are 40° and 60°. Find the third.
Getting Ready for the Laser Heist · for the teacher
75°
full turn 360°, half 180°, quarter 90°
a) obtuse (160°) b) right c) acute (35°) d) straight
a) crossing b) parallel c) perpendicular
The two gray roads running across are parallel (they never meet and stay the same distance apart). The avenue is not: it crosses both. (It's a transversal, the word students learn this unit.)
45 + 65 = 110°
90 − 55 = 35°
180 − 40 − 60 = 80°
x = 28
x = 70
3x = 165 → x = 55
What each part tells you
Part
Why it matters for this unit
If many students miss it
A: Measuring angles
Every angle rule comes down to 90°, 180° or 360°.
Turn in place: a quarter turn, a half turn, a full turn. Then read angles on a protractor together.
B: Kinds of lines
Parallel lines and a transversal are the heart of 8.G.A.5.
Hunt for parallel and perpendicular lines in the room and on a city map.
C: Angles add up
#7 and #8 are complementary and supplementary angles before they have names.
The worksheet's Parts D and E and the game's harder vaults use equations like 3x + 15 = 180.
Review with Tip the Scales before the equation problems.
Reading the results: students strong in all four parts can start with vertical angles and parallel lines right away. Students who miss Part C need complementary and supplementary angles first; give them the Bank Shot printables and the visual notes. Compare the “How sure do you feel?” circles with the answers: a student who circles “I've got it” but misses the part is worth a quick conversation.