Interpret a motion graph
Turn a short table of distance and time values into a graph, then explain what each segment means.
How to use this website
1. Learn
Read the concept sections and identify the main definitions, relationships and examples.
2. Recall
Close the notes and explain the topic from memory before checking what was missed.
3. Practise
Answer the questions first, then open the explanation and correct any weak reasoning.
Use the site, don’t just read it
The strongest pages now include original diagrams, observation tasks, data interpretation, misconception checks and worked reasoning. Start with one of these:
Trace series and parallel paths
Use a circuit diagram to reason about current, voltage and what happens when a path is broken.
Follow water through a real environment
Connect evaporation, infiltration and runoff to a simple outdoor observation.
Featured lessons
Class 6 Science: Water Cycle, Weather and Conservation
A clear lesson on evaporation, condensation, precipitation, collection, groundwater and practical water conservation.
Read lesson and questions →Class 6 Mathematics: Fractions and Decimals
A practical guide to equivalent fractions, comparison, decimal place value, conversion and everyday word problems.
Read lesson and questions →Class 7 Science: Heat and Temperature
A focused lesson on temperature, conduction, convection, radiation, conductors, insulators and everyday applications.
Read lesson and questions →Class 8 Science: Force and Pressure
Learn how forces change motion and shape, how pressure depends on area, and how fluids exert pressure.
Read lesson and questions →Class 9 Physics: Motion, Speed and Acceleration
A complete revision page for distance, displacement, speed, velocity, acceleration and basic motion graphs.
Read lesson and questions →Class 9 Biology: Cell Structure and Function
A structured comparison of plant and animal cells, organelles, membranes, transport and cell organisation.
Read lesson and questions →What you can study here
The public library is organised by topic rather than by a single long app description. Students can revise science and mathematics concepts, then test recall using explained questions. Current subject pages cover the water cycle, fractions and decimals, heat and temperature, force and pressure, motion, cell structure, electricity and chemical reactions. Separate study guides cover active recall, mock-test strategy, quiz design and internet safety.
Each lesson is written as a self-contained revision page with learning objectives, concept explanations, worked examples and questions with reasoning. The goal is to help a learner understand why an answer is correct instead of only memorising a final response.
For students, teachers and parents
Students can use a page for revision before attempting its questions. Teachers can use the examples as discussion prompts or formative-assessment ideas. Parents can use the study guides to support consistent revision routines without needing access to a student account.
The public lessons are supplementary learning resources. They do not replace prescribed textbooks, teacher instructions or examination-board guidance. Corrections and accessibility feedback can be sent through the contact page, and the editorial policy explains how public content is maintained.
Start with a complete lesson
If you are new to the site, try Electricity, Circuits and Power for worked calculations, Motion, Speed and Acceleration for numerical practice, or Water Cycle, Weather and Conservation for a science concept review. The lesson library lists every available public resource.
Public library updated: 23 October 2026.
Use the BIS Quiz App
Registered students and teachers can open the app for class-based quizzes, study materials, tests and results.
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