pool

Everyday

1. A pool is a place filled with water to swim in. tree →
2. A pool is a small area of liquid: a pool of rainwater. tree →
3. To pool is to put money or things together so everyone can share them. tree →
4. A pool is a group of things or people shared: a car pool. tree →
5. Pool is also a game played with balls and a stick on a table. tree →

In the lessons

In maths: a place to swim; water filled; laps; money pooled together; volume of a pool. In everyday life and safety: swimming lessons, pool rules. In science: puddles and rock pools by the sea, evaporation. In stories: «a pool of moonlight».

Examples

• The pool holds 5000 liters of water. tree →
• She swims 10 laps in the pool. tree →
• The pool is 25 meters long. tree →
• They pooled their money to buy a gift. tree →
• No running by the pool! tree →
• We found crabs in the rock pools. tree →
• A pool of water formed under the leaky tap. tree →
• The parents set up a car pool for school. tree →
• Dad played pool with his friends. tree →
• A thirsty Stag went down to a pool to drink. tree →

Note

Water filled at a rate: time = volume ÷ rate. «Pooled» money = add. Trap: laps are lengths, so distance = laps × pool length. Safety: swim only when an adult is watching; walk, do not run, near pools. «Pool» in the UK is often «swimming pool» or «swimming baths».

In Jewish tradition

The frogs of the second plague came out of the Nile's waters and pools. In the Psalms God turns a wilderness, or even a rock, into a pool of water, and Koheleth makes pools to water his trees.

Interpretation. The pool of water from the rock is read as a sign of God's power to give life in dry places.

Examples

• And the LORD said unto Moses: 'Say unto Aaron: Stretch forth thy hand with thy rod over the rivers, over the canals, and over the pools, and cause frogs to come up upon the land of Egypt.' (Torah EXO.8.5, JPS 1917) tree →
• He turneth a wilderness into a pool of water, and a dry land into watersprings. (Writings PSA.107.35, JPS 1917) tree →
• I made me pools of water, to water therefrom the wood springing up with trees; (Writings ECC.2.6, JPS 1917) tree →
• Who turned the rock into a pool of water, the flint into a fountain of waters. (Writings PSA.114.8, JPS 1917) tree →

Note

Water filled at a rate: time = volume ÷ rate. «Pooled» money = add. Trap: laps are lengths, so distance = laps × pool length. Safety: swim only when an adult is watching; walk, do not run, near pools. «Pool» in the UK is often «swimming pool» or «swimming baths».