2025 September Highlights
Here’s a summary of the encouraging growth in usership :]
Homeostasis: Ben’s Bad Day
Ben cannot catch a break. Rebuild the feedback loop his body uses to fight back at each crisis — stimulus, receptor, control centre, effector, response.
Mole Concept
What is a mole? Does it dig into the ground or quiver on the face? Or does it help us in counting how many particles there are?
Korean War Decision Simulator
What would you do if you were Kim Il Sung, Joseph Stalin, Harry S. Truman or Syngman Rhee?
Creating HTML5 Activities & Adding Them to SLS
Learn how to create HTML5 activities and integrate them with existing Student Learning Space (SLS) lessons here.
Pupil Reflex In Bright & Dim Lighting
Look at how the pupil changes size as light intensity varies!
Infectious Diseases
Use this simulation to model the spread of infectious diseases such as AIDS, influenza and pneumococcal disease.
Disease Outbreak
There’s an outbreak in your school. Go through various stations to contain these diseases!
Cuban Missile Crisis
This confrontation is widely considered the closest the Cold War came to escalating into full-scale nuclear war. Learn more about how tensions were defused.
Antibiotic Resistance
Why must we complete a course of antibiotics when we suffer from bacterial infections?
Photosynthesis & Respiration
Learn the differences between photosynthesis & respiration.
Battle of Singapore
Learn more about how Singapore fell into Japan’s control by ordering events on a timeline.
Science Teachers’ Best Practices Showcase
Here’s a Science lesson which encourages A.I. literacy!
Teacher Mole’s Nightmare
You’re a teacher trapped in a nightmare labyrinth of common mole concept errors. Can you escape before it’s too late?
Deflection of Charged Particles in Electric Field
How do a particle’s charge and mass affect its angle of deflection?
s, p, d and f orbitals
Learn more about the electronic structure of the atom here.
Ionisation Energies
Discover more about various trends in ionisation energy!
Dot and Cross Diagrams
Practice drawing dot and cross diagrams of both ionic and covalent substances.
Chemical Bonding
What are giant ionic structures, simple molecular structures and giant metallic structures?
Hydrogen Bonding
Learn more about intermolecular and intramolecular hydrogen bonding!
Producers, Consumers & Decomposers
What roles do producers, consumers & decomposers fulfill in different ecosystems?
Allotropes of Carbon
Gain a deeper understanding of what allotropes are and learn more about the various allotropes of carbon.
Deforestation
Model the impact of various human activities on the population numbers of different animals!
Warning Colouration & Mimicry
Why do some beetle species advertise their toxicity with bright colours? How can other beetle species benefit?
Set Notation Challenge
How good are you at interpreting set notation & analysing Venn diagrams?
About
Thank you for using EdTechSims. I hope you find it useful. Here is a brief outline of my teaching &
Trophic Trouble
Something is upsetting the balance of a frail ecosystem. How can we work together to restore its verdancy?
Molecular Shapes
How are shapes of molecules determined? Find out here!
Molecular Shapes & Bond Angles Challenge
Test your speed in identifying bond angles & molecular shapes!
Game Theory & Evolutionarily Stable Strategies
How can game theory explain animal behaviours?
Strength, Basicity & Concentration of Acids
How do the strength, basicity and concentration of an acid affect its pH?
Gel Electrophoresis
Discover more about gel electrophoresis and how it is used in DNA fragment analysis.
Titration pH Curves
How does pH change when various acids are mixed with an alkali? Take a look here!
Titration pH Curves (Advanced)
Learn more about buffers, calculations, pH and pKa here.
Buffer Solutions
Discover more about buffers – both acidic and alkaline – here!
Acid Base Equilibria Quiz
How well do you know your pH, pOH, pKa, pKb & pKw?
Asexual & Sexual Reproduction
Under what environmental circumstances is each favoured?
Solubility Rules
Do you know which salts are soluble and which, insoluble?
Menstrual Cycle
What roles do these hormones (oestrogen, progesterone, follicle stimulating hormone & luteinising hormone) play?
Salt Preparation
Which method is suitable for preparing a given salt? Find out here!
Continuous & Discontinuous Variations
What are their key differences? What are some examples of each?
Surface Area & Volume
Do you know how to calculate the volume and surface area of these figures (cube, cuboid, prism, cylinder, pyramid, cone and sphere)?
Punnett Squares
Learn more about how to calculate the probability of inheriting traits here.
Qualitative Analysis Lab
How can you identify cations, anions and gases?
Euler’s Formula for Polyhedra
How much do you know about Euler and his formula for convex polyhedra?
Colours of Chemicals
Challenge your knowledge on the colours of chemicals!
Synonyms For Walk
What’s the difference between stroll, stride, sprint, scurry and saunter? Learn more synonyms for ‘walk’ here!
Synonyms For Talk
What do belabour, bark & berate mean? Discover some synonyms for ‘talk’ here!
Idioms As Emojis Challenge
Can you guess what these idioms are from their emoji hints?
Periodic Table Trends
Learn more about Period 3, Group 2 and Group 17 here!
Group 17 Halogens
What are some trends in physical and chemical properties of Group 17 Halogens?
Reactivity Series of Metals
How can the reactivity of a metal affect the chemical changes it undergoes?
Rusting
What is rust? Which factors cause rusting and which accelerates it?
Oxidation States Quiz
How quickly can you calculate oxidation states? Test yourself here!
Oxidation Numbers Mega Quiz
Test your speed in selecting the correct oxidation numbers!
