glass

Everyday

1. Glass is a hard clear material that you can see through, used for windows, bottles and jars. It breaks easily. tree →
2. A glass is a cup made of glass for drinking, and a glass of something is the amount it holds. tree →
3. Glasses are two pieces of glass or plastic in a frame that people wear to see better. tree →
4. A glass can also mean a mirror, especially an old-fashioned one. tree →

In the lessons

A container that measures liquid (cups of juice, millilitres); glasses are also counted things. In science: glass is made from sand heated very hot; it lets light through (transparent). In safety: broken glass cuts, so tell an adult and do not pick it up. Phrases: «a glass of water», «a pair of glasses», «magnifying glass».

Examples

• A jug fills 6 glasses. tree →
• Each glass holds 250 millilitres. tree →
• She drank 3 glasses of milk. tree →
• 2 glasses broke, so 10 are left. tree →
• The window is made of glass. tree →
• Grandma puts on her glasses to read. tree →
• Use a magnifying glass to look at the ant. tree →
• Careful, there is broken glass on the floor! tree →
• "Tell me, glass, tell me true! tree →

Note

«Each glass holds» is a rate: glasses × amount per glass gives the total liquid. Trap: «glasses» can also mean spectacles in a story about people; «a pair of glasses» is one thing. Glass the material is uncountable: «some glass», «a piece of glass».

In Jewish tradition

In Job, it is a precious, rare object. Glass was costly in ancient times.

Interpretation. Job lists glass and gold as things less valuable than wisdom. The tradition says no earthly wealth can match it.

Examples

• Gold and glass cannot equal it; neither shall the exchange thereof be vessels of fine gold. (Writings JOB.28.17, JPS 1917) tree →

Note

«Each glass holds» is a rate: glasses × amount per glass gives the total liquid. Trap: «glasses» can also mean spectacles in a story about people; «a pair of glasses» is one thing. Glass the material is uncountable: «some glass», «a piece of glass».