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Ages 10+ · Money · Investing and growing
Risk and reward
Steady Garden• Adds 10 coins every year• Never dips• Stays between 100 and 140Swing Garden• Some years adds lots• Other years gives some back• Runs from 70 up to 180
Two made-up gardens in Pebble Hill.
The big ideaA bigger possible reward usually comes with a bigger chance of ending with less.

How it works

Reward is the extra a garden adds. Risk is the chance of ending with less.

The Swing Garden has more of both, and the Steady Garden has less. A bigger possible reward usually comes with a bigger risk.

No one can know which way a swing garden will go next. The same garden can end ahead one time and behind another.

Cy's Swing Garden050100150200160Year 1110Year 2180Year 3150Year 4coins
Cy's Swing Garden, year by year.
Ana's Swing Garden05010015070Year 1130Year 290Year 3120Year 4coins
Ana's Swing Garden, in the very same garden.

Example 1: The Steady Garden

  1. It adds 10 coins every year, never more or less.
  2. 100 + 4 × 10 = 140
  3. After four years it holds 140 coins.

Example 2: Cy's swing years

  1. Cy's garden goes 160, 110, 180, then 150.
  2. Year 2: 160 − 110 = 50 coins given back.
  3. Year 3: 180 − 110 = 70 coins added.
  4. After four years Cy has 150, more than Maya's 140.

Example 3: Ana's swing years

  1. Year 1: it shrinks to 70, which is 100 − 70 = 30 coins below what she planted.
  2. Years 2 to 4 go 130, 90, then 120.
  3. Steady would have made 140, and 140 − 120 = 20.
  4. Ana ends 20 coins below Steady.

Example 4: Reward and risk

  1. Reward is the extra a garden adds.
  2. Risk is the chance of ending with less.
  3. Swing ran from 70 up to 180, while Steady stayed between 100 and 140.
  4. More possible reward, and more possible risk.

Words to know

reward
The extra a garden adds.
risk
The chance of ending with less.
steady
Adds the same every year.
swing
Some years adds lots, some years gives back.

Watch out

Try it

  1. The Steady Garden adds 10 coins a year. How many coins after 4 years from 100?
  2. The Swing Garden falls from 160 to 110. How many coins does it give back?
  3. Is shrinking to 70 a reward or a risk?
  4. Which garden has the bigger possible reward, Steady or Swing?
Answers: 1. 140 coins · 2. 50 coins · 3. A risk · 4. Swing
Try at homeAsk a grown-up about a time they chose safer or riskier, like a trip. What did they think about first?
For grown-upsAsk a grown-up about a time they chose a safer or a riskier way, like a trip, and what they thought about first. The gardens are made up and the story gives no advice about any real money.
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