100 BOND GAME
100 bond game
Each learner starts the game with a theoretical 100 bonds, each worth £1.
Over ten rounds, learners are told that they need to ‘invest’ their bonds in an
attempt to increase their revenue. Practitioners stipulate the conditions for
each particular round, such as ‘bonds will increase or decrease by 10 pence
each’ or ‘the value of each bond will double/halve’, before learners decide
how many of their bonds they are willing to ‘play’ for this particular round.
At the beginning of each round, the new value of each of the 100 bonds is
taken as
current revenue
100
For each round, the total score from a roll of two dice determines whether the
value of the bonds has increased, decreased or remained stable:
Total from two dice
Effect on the bonds
2, 3, 11 or 12
Decrease
4, 5, 9 or 10
Increase
6, 7 or 8
Stable
For example, in the table below the learner has chosen to invest 50 of their
100 bonds in Round 1, where they have the chance to increase their revenue
by 20 pence for each bond invested. A total of 5 is rolled on the dice,
ensuring an increase in revenue of 20 pence per bond for 50 bonds (ie an
increase of £10), thus the learner’s total revenue is now £110. During Round
2, in which they have the chance to double their revenue for each bond
invested, they choose to invest 20 bonds. Unfortunately a total of 11 appears
on the dice, ensuring a decrease in revenue per bond, and each of these 20
bonds reduces from £1.10 to £0.55, a loss of £11 in total and a new total
revenue of £99. During Round 3, a total of 7 appears on the dice and all
remains stable, thus the learner’s total revenue remains at £99.
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
1
100 BOND GAME
Round
1
‘Each bond
invested will
increase or
decrease by 20p’
2
‘Each bond
invested will
double/halve in
value’
3
‘Each bond
invested will
increase or
decrease by £1’
2
Number of
bonds
invested
100
Value of each
bond
Increase/decr
ease per bond
£1
n/a
Total
increase/decre
ase
n/a
50
£1
+£0.20
+£10
£110
5
20
£1.10
–£0.55
–£11
£99
11
25
£0.99
Zero
Zero
£99
7
MATHEMATICS (NAT 4, MATHEMATICS)
© Crown copyright 2012
Total revenue
Total from dice
£100