# How can a student make any learning progress without a worked answer?

We are evangelical about feedback. Without it, the only purpose of an assessment exercise is to test the level of learning that is transferring from class activities and to provide a mark book entry. No wonder all but the most capable students get frustrated with archaic digital services.

Students need an explanation to improve and the difference in terms of learning progress achieved by a service that provides no feedback and a service that allows students to interact with a full explanation that incorporates a worked answer will be enormous.

This will help students to improve their performance. This will inspire them. Humans like to succeed and if they do they will come back for more. If they continuously fail, they wonâ€™t want to come back for more and will become reluctant learners. Why would anyone want to do anything if they keep getting questions wrong and arenâ€™t provided with any immediate way of improving?

Letâ€™s look at a basic geometry question and think about how much detailed feedback might help.

**NO FEEDBACK**

Incorrect - try again!

**OR**

**DETAILED FEEDBACK**

Incorrect â€“ watch the video feedback (worked answer) before you attempt the next question.

**Audio Transcript**

In this question, we are asked simply to find the missing length. We are given the lengths of two of the sides and can, therefore, use Pythagoras to work out the final side length. Letâ€™s have a look at what we have been asked to work out here. So, the missing length is the side opposite that right angle that is called the Hypotenuse. Pythagoras theorem states that the two squares of the two shorter sides add up to make up the area of the square of the length of the longest side the Hypotenuse. So, letâ€™s take the two short sides and square them to find the area. So we are going to do 21 squared and 20 squared which gives me 441 and 400. Now because they make the area of the hypotenuse I am going to add these two values together to get 841. Thatâ€™s the area of the Hypotenuse. We need to know the side length so the final thing we have to do is to square root the answer. Remember this 3-stage process of squaring, adding or subtracting and then square rooting at the end. So, the square root of 841 is 29. There is your answer.

**Visual Transitions**

**Actual Video**

EzyEducation provides this level of feedback after every question.