STEM Projects Brain Teasers

5 strangers in a room. If they each shake hands once with each other, how many handshakes?

• 5

• 25

• 10

• 15

How many rectangles are in the picture below?

• 10

• 11

• 18

• None of these

What comes next in this pattern: 1, 1, 2, 3, 5, 8, 13, ?

• 15

• 17

• 19

• 21

Tags

CCSS.HSF.BF.A.2

How many ways can you stack 4 cubes one on top of the other with red on the bottom each time?

• 4

• 6

• 8

• 28

How many books are on the shelf if the 16th book is the middle one?

• 16

• 31

• 36

• 46

Tags

CCSS.2.MD.B.6

If you overtake the person coming third in the 100m, what position would you now be?

• First

• Second

• Third

• Fourth

If you overtake the person coming last in the race, what position would you be?

• First

• Second

• Second Last

• Last