5
Activity
Inch by Inch
A game for 2 players
Materials
9
8
7
0 1
2
3
6 54
1 Each Player begins the game with a tree “seed.”
2 Player 1 spins the spinner to determine how
5
6
7
8
Did your tree have any growth spurts? What did this look like on the
graph?
© ETA/Cuisenaire®
4
Inches of Growth
3
0 1
9
2
many inches his or her tree grew during the
3
8
first month. Player 1 records the data.
7
4
6 5
Player 2 takes a turn.
Seed Growth:
Players continue spinning the spinner and
Jan. = 3 inches
gathering data until 12 months of data have
been collected.
Each player creates a line graph
5
displaying the height of his or her tree
4
each month.
3
Players compare graphs. The player
2
with the tallest tree each month earns 5
1
points. The player with the tallest tree
January
February
March
overall (after 12 months) earns 10 points.
Month
Players check each other’s graphs.
Players each earn 10 bonus points for making a correct graph. Players
lose 2 points for each error (for example, forgetting to put a title or a
label on the graph).
The player with the most points wins the game.
Probability and Statistics Gather data, record data, and then choose the best way to present the data collected.
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Skill Practice
1 Draw a line graph to represent the data in the table.
Maple Tree
Amount
Year
of Growth
(in feet)
1
1
2
2
3
2
4
3
5
1
Oak Tree
Amount
Year
of Growth
(in feet)
1
1
2
1
3
2
4
1
5
1
Pine Tree
Amount
Year
of Growth
(in feet)
1
1
2
2
3
3
4
1
5
3
2 How many feet did each tree grow the first year?
3 By the end of the second year, how tall was each tree?
4 By the end of the fourth year, how tall was each tree?
5 At the end of 5 years which tree was tallest?
How tall was it?
6 How many years did the Pine tree grow faster than the Oak tree?
7 How many years did the Pine tree grow faster than the Maple tree?
8 How many years did the Maple tree grow faster than the Oak tree?
9 If the trees continue to grow at the same rate as the last year recorded,
how much would you expect each tree to grow in year 6?
10 If the trees are expected to double in size every 5 years, how tall will each
tree be in year 10?
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