How it works
Every IB subject has linking questions: broad, cross-cutting prompts designed to build what the IB calls networked knowledge rather than isolated facts. The questions used in Lens are paraphrased from or inspired by the IB subject guides. They are not the official wording.
Lens turns each linking question into a sorting challenge. For each lens, you see a set of specimens. Most genuinely fit the lens. One is an impostor: it looks like it belongs but fails on close inspection. Your job is to find the impostor and understand why it doesn’t fit. That’s the learning.
Three modes
Work through each lens at your own pace. See the specimens, pick the impostor, read the explanations. Progress is saved so you can pick up where you left off.
A 60-second timed round. Specimens appear one at a time; for each, decide: fits or doesn’t fit. Your top 3 scores are recorded.
Browse all the linking questions. See which lenses you’ve examined and jump to any one directly.
SL and HL
Each subject supports filtering by IB level. SL students see only Standard Level content. HL students see everything. Set your level on the subject home page.