BRAINAPPS / Skills tree

Semantic memory: meaning, examples and exercises

Semantic memory concerns facts, concepts and meanings. Practice focuses on explaining knowledge accurately and using it in a new example.

Knowledge rather than the learning episode

Knowing what a term means differs from remembering the day you learned it. The first concerns semantic knowledge; the second concerns an event with a time and place. Both may contribute when you describe a lesson.

Understanding and short-term tasks

Repeating fresh symbols is not the same as explaining a concept. A memorized definition also needs a check for meaning. N-back asks you to update recent stimuli; it does not measure the amount of knowledge you have acquired.

Explain, apply and verify

Choose several terms from a reliable learning text. Explain each in your own words, give an example and distinguish it from a related term. Check your answers, then try again after a delay. Keep a list of specific errors to revisit.

Explain area and perimeter

Step-by-step worked example

What to prepare

Prepare paper and a textbook defining area and perimeter. The example rectangle has sides of 3 m and 5 m. Explain the concepts and apply them.

Task sample
Rectangle: 3 m × 5 m A frame needs the boundary length. A surface covering needs the area.

What to do, step by step

  1. Without the textbook, explain perimeter and area in your own words instead of only naming formulas.

  2. Calculate the entire boundary for a frame by adding four sides. Include the unit.

  3. Calculate the surface area and explain why its unit differs from perimeter.

  4. Compare your explanation with the textbook and check. Distinguish meaning, calculation and unit errors.

How to check your result

Perimeter: 3 + 5 + 3 + 5 = 16 m. Area: 3 × 5 = 15 m². A frame concerns the boundary; a covering concerns the surface. Correct numbers without explaining that distinction do not establish understanding of both meanings.

Your next attempt

Use another rectangle and explain without supplied wording. Repeat after a pause. N-back remains a different kind of task, not a knowledge check.

Examples in everyday tasks

  • Distinguish perimeter and area

    Someone confuses perimeter and area. Explain that perimeter is boundary length while area describes the surface inside. A frame around a photograph needs a boundary measurement; paper covering its surface needs an area measurement. The example checks meanings rather than recollection of the lesson where they were learned.

  • Explain a classification

    Group birch, oak, daisy and tulip into trees and herbaceous plants, explaining your criterion. Add another suitable example to each group. The relevant information is the relationship between concepts. Remembering these four words in their original order would be a different task.

  • Apply a rule to a new case

    You know that multiplying a number by a sum can be done by multiplying each term and adding the products. Invent an example such as 4 × (10 + 2) and explain both calculations. Applying the rule checks its meaning beyond repeating the wording.

BRAINAPPS / SCIENCE

Exercises and scientific tasks

These scientific tasks offer a comparison with semantic memory. N-back concerns recent stimuli; it does not measure the amount of knowledge you have acquired.

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Frequently asked questions

Does remembering a school day count?

That is an episodic memory. Knowledge of the lesson’s concepts is semantic memory.

Is repeating a definition enough?

It checks wording; an explanation and a new example also help you check meaning.

Why link to N-back?

To compare tasks: updating recent stimuli differs from recalling established knowledge.

Explore the science behind the skills

Discover how the tasks work, what research shows and how cognitive training developed.

BRAINAPPS

Start with one task

Choose an exercise, learn the rule and compare attempts under the same conditions. An account gives you access to BrainApps practice.