Instructions:
1. Read the given word or phrase.
2. Click the correct definition.

Instructions:
1. Read the given word or phrase.
2. Click the correct definition.

Instructions:
1. Read the given word or phrase.
2. Click the correct definition.

Instructions:
1. Read the given word or phrase.
2. Click the correct definition.

Instructions:
1. Read the given word or phrase.
2. Click the correct definition.

Example: There are four chairs.
Method: Figure out the noun which can be counted and select it.
Answer: In the above sentence, the noun 'chairs' can be counted. Therefore, the answer is 'chairs'.

Example: What is the area of a circle whose radius is 5 cm?
Given: Radius(r) = 5 cm
Area of a circle: πr² = π x 5² = π x 25 = 25π sq cm

Example: vehicle powered by an engine

Example: Rails in a railway track

Instructions:
1. Click a card.
2. Read the name or definition.
3. Find its match by clicking an other card.
4. Continue until all cards are flipped.

Instructions:
1. Click a card.
2. Read the name or definition.
3. Find its match by clicking an other card.
4. Continue until all cards are flipped.