Lab
Fair Test Lab
Design fair tests at six science stations. Find hidden variables, collect repeated measurements, and explain your evidence.
Launch Fair Test LabBiology
Explore how living things work, from molecules and cells to ecosystems.
46 activities in 7 units · 6 simulations, 21 practice activities, 19 labsMeasurement3
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Lab
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Practice
Graph Doctor
Run the Graph Clinic: diagnose and fix sick lab-report graphs, then read them: values, slopes, trends and outliers. 10-question runs.
Launch Graph Doctor -
Practice
Read the Glassware
Run the lab's measuring desk: read cylinders, burets, rulers, thermometers and balances to the right digit. 10-question runs.
Launch Read the Glassware
Cells4
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Simulation
Build a Cell
Click organelles onto a blank cell and discover which cell type you've built.
Launch Build a Cell -
Lab
Microscope Slide Lab
Prepare wet-mount slides and focus four real specimens with coarse and fine controls.
Launch Microscope Slide Lab -
Simulation
Levels of Life: From Cell to Organism
Zoom from one cell out to tissue, organ, organ system, and the whole human body across 13 pathways.
Launch Levels of Life: From Cell to Organism -
Practice
Organelle Repair Shop
Fix sick cells: read the symptom, tap the broken organelle and swap in a working one. Plant, animal or bacterium? 10-question runs.
Launch Organelle Repair Shop
Biomolecules3
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Lab
Macromolecule Identification Lab
Use chemical indicators to identify starches, sugars, proteins, and lipids in food samples.
Launch Macromolecule Identification Lab -
Lab
Macromolecule Builder
Build carbohydrates, lipids, proteins and DNA from real 3D monomers. Count the water at every bond, melt fats, unfold a protein.
Launch Macromolecule Builder -
Practice
Polymer Workshop
Run a molecular workshop: build macromolecules from monomers, break them down by hydrolysis, and count every water. 10-question runs.
Launch Polymer Workshop
Enzymes & Energy8
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Simulation
Enzyme Exploration
Build an enzyme reaction, watch molecules collide, see denaturation, then take the test.
Launch Enzyme Exploration -
Lab
Liver Catalase Lab
Run a step-by-step catalase experiment with a control, then graph your data and argue from evidence.
Launch Liver Catalase Lab -
Simulation
Biocycles – Photosynthesis and Respiration
See how matter cycles and energy flows between photosynthesis and cellular respiration.
Launch Biocycles – Photosynthesis and Respiration -
Lab
Bubble Lab: Elodea Photosynthesis
Count the O₂ bubbles from an Elodea sprig as you change the lamp's distance and color, graph the rate, and zoom in to the chloroplast.
Launch Bubble Lab: Elodea Photosynthesis -
Lab
Leaf Disks & Yeast Balloons
Float leaf disks under a lamp for photosynthesis, inflate yeast balloons for respiration, then graph, find rates and write a CER.
Launch Leaf Disks & Yeast Balloons -
Practice
Atom Accountant
Audit the cell's Atom Bank: sort, balance and trace every C, H and O through photosynthesis and respiration. 10-question runs.
Launch Atom Accountant -
Practice
Enzyme Locksmith
Fit each substrate key to its enzyme's active site, then set temperature, pH and substrate so the reaction runs fast. 10-question runs.
Launch Enzyme Locksmith -
Practice
ATP Power Company
Run a cell's power plant: choose aerobic respiration or fermentation, load glucose and deliver exactly the ATP each cell orders.
Launch ATP Power Company
Homeostasis5
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Lab
Homeostasis Lab
Investigate a teen runner or a radish, graph your own data, and explain it with a negative or positive feedback loop.
Launch Homeostasis Lab -
Practice
Osmosis Spa
Run a spa for cells: name each bath, predict lysis, crenation, turgor or plasmolysis, and mix baths to order. AP water potential too.
Launch Osmosis Spa -
Lab
Membrane Transport & Osmosis Lab
Zoom from a beaker to one protein. Watch diffusion, channels, carriers, aquaporins, pumps and vesicles carry molecules across a membrane.
Launch Membrane Transport & Osmosis Lab -
Practice
Membrane Bouncer
Work the door of a cell: send each molecule through the bilayer, a channel or carrier, a pump, or a vesicle. 10-question runs.
Launch Membrane Bouncer -
Practice
Homeostasis ER
Be the ER doctor: rebuild each patient's feedback loop and watch their chart return to the set point. 10-question runs.
Launch Homeostasis ER
Genetics14
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Simulation
DNA to Protein Exploration
Build DNA, copy it to mRNA, translate it, fold the protein, then mutate the gene. General Biology and AP levels.
Launch DNA to Protein Exploration -
Practice
Genetics Counseling Clinic
Study family histories and work the Punnett squares to answer couples' inheritance questions.
Launch Genetics Counseling Clinic -
Lab
Pedigree Lab
Explore inheritance patterns on family trees, build pedigrees from a written story, and test yourself at General or AP level.
Launch Pedigree Lab -
Lab
Cell Cycle & Mitosis Lab
Watch living cells divide in time-lapse, from dish to chromosomes. Time each phase, switch off checkpoints and see how cancer starts.
Launch Cell Cycle & Mitosis Lab -
Lab
Biotechnology Lab
Cut DNA with restriction enzymes, size the pieces on a gel, copy the insulin gene by PCR and splice it into a plasmid.
Launch Biotechnology Lab -
Lab
Meiosis & Inheritance Lab
Follow real alleles through meiosis, then raise peas, corn and fruit flies and count their traits: Punnett squares, linkage, chi-square.
Launch Meiosis & Inheritance Lab -
Practice
Ribosome Diner
Cook at the Ribosome Diner: transcribe DNA tickets into mRNA, read codons on the codon wheel and chain the amino acids. 10-question runs.
Launch Ribosome Diner -
Practice
Chromosome Choreographer
Set the cell stage for each phase of mitosis: place chromosomes, spindle and nuclear envelope, then count what's there. 10-question runs.
Launch Chromosome Choreographer -
Practice
Gamete Factory
Run chromosomes through meiosis and ship every kind of egg or sperm a genotype can make. 10-question runs.
Launch Gamete Factory -
Practice
Creature Breeder
Choose parents, build Punnett squares, predict trait odds and hatch random litters across Mendelian and non-Mendelian inheritance.
Launch Creature Breeder -
Practice
Mutation Detective
Work the night shift at a genetics crime lab: line up normal and mutant genes, find the change, classify it and predict the protein.
Launch Mutation Detective -
Practice
Gel Crime Lab
Run the DNA bench at a forensic lab: cut samples with restriction enzymes, run a gel and compare every band with the evidence.
Launch Gel Crime Lab -
Practice
Probability Plinko
Predict Mendelian odds, then drop 4, 40 and 400 offspring through a Plinko board of gamete gates and see how samples wobble.
Launch Probability Plinko -
Lab
Microscope Cell Division Investigation
Focus a virtual microscope on stained slides and find cells at each stage of mitosis and meiosis.
Launch Microscope Cell Division Investigation
Evolution & Ecology9
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Practice
Food Web Architect
Build real food webs, tag trophic roles, predict cascades, and trace shrinking energy through six living ecosystems.
Launch Food Web Architect -
Practice
Cladogram Builder
Curate a museum's Tree of Life hall: build cladograms from trait tables and DNA data, tick shared derived traits, read who is related.
Launch Cladogram Builder -
Practice
Bone Matcher
Run a museum's bone prep lab: tag matching bones in human, whale, bat, bird and horse limbs, then label homologous, analogous or vestigial.
Launch Bone Matcher -
Lab
Natural Selection Lab
Predators hunt real prey in four real habitats. Change the environment and watch allele frequencies and population size shift.
Launch Natural Selection Lab -
Lab
Evidence of Evolution Lab
Dig whale fossils from dated rock, compare forelimb bones, count protein differences, and build trees from bones and DNA.
Launch Evidence of Evolution Lab -
Lab
Ecosystem Dynamics Lab
Rabbits fill a meadow until the grass runs out, wolves and moose cycle on Isle Royale, and kelp falls to urchins when sea otters vanish.
Launch Ecosystem Dynamics Lab -
Lab
Isopod Choice Chamber
Set up a two-sided choice chamber and watch isopods pick their preferred environment.
Launch Isopod Choice Chamber -
Simulation
Succession Explorer
Watch life return to new lava, glacial till and burned or logged forest, and see why soil decides primary vs. secondary succession.
Launch Succession Explorer -
Lab
Geologic Time & Fossils Lab
Read a cliff’s history from its clues, date samples with radioactive clocks, and place fossil beds on the ICS time scale.
Launch Geologic Time & Fossils Lab
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