Explanation

• Educational psychology is concerned with the scientific study of Human Learning.
• It focusing on how people learn, what they learn, and how learning can be improved.
• It examines the cognitive, emotional, and social processes involved in learning to develop effective teaching methods and educational practices.

Explanation

Since ∠A = ∠B, sides AC = BC, and ∠C is the unequal angle.

The angle bisector of ∠C splits the triangle into two congruent triangles by SAS (Side-Angle-Side) rule.

Explanation

Circumference is the total length around a circle.

It is calculated as 𝐶 = 2𝜋𝑟, where 𝑟 is the radius.

Explanation

Anaphoric reference points back to something mentioned earlier.

Here, "He" refers back to "John."

Explanation

13 + 12 = 25 is mathematically correct.

Explanation

8 men make 18 chairs in 9 days.

First, find out how much work 1 man does in 1 day:

8 men × 9 days = 72 man-days for 18 chairs.

Now, for 27 chairs in 6 days:

Let the number of men be x.

x men × 6 days = 6x man-days.

Compare the two situations:

18 chairs / 72 man-days = 27 chairs / 6x man-days

18 × 6x = 27 × 72

108x = 1944

x = 18

Explanation

The prefix "Tera" refers to 10^12.

It is commonly used to represent a trillion in the metric system (1,000,000,000,000).

Explanation

"Flock" is the correct collective noun for sheep (also birds).

"A flock of sheep" is a commonly used and grammatically correct phrase.

Explanation

She asked him why he was late.

In indirect speech, the question is converted into a statement, and the tense is adjusted.

"Are" changes to "was" to match the past tense.

Explanation

A dental filling is an example of a solution where a liquid (like mercury) is dissolved in a solid (like silver or tin).

This mixture forms a solid solution used to restore damaged teeth.