Lessons / Exam traps
IB exam traps. One a day.
15 free 60-second IB exam traps in Math, Biology, Chemistry, Physics and Computer Science. Spot the mistake, then watch the full lesson.
Each one is a short, original exam-style question with the mistake most students make. Pause before the answer and check yourself. A new trap comes out every day at 12:30 New York time.
60 sIB Physics IA: ±0.01 or ±0.02?Watch on YouTube
60 sIB CS 2D Arrays: grid.length = ?Full lesson: 2D Arrays in Java: Nested Loops →
60 sIB Computer Science: MAR or MDR?Full lesson: IB Computer Science CPU: ALU, CU & Registers (MAR vs MDR) →
60 sIB CS Students Don't Trust Working CodeWatch on YouTube
60 sIB Chemistry: Which Radical Forms?Watch on YouTube
60 sIB Chemistry: 29 Electrons in Fe3+?Full lesson: Protons, Neutrons & Electrons in 7 Min →
60 sIB Diploma Bio: Which Bird Is Fitter?Full lesson: Natural Selection: Fitness in 8 Min (6 Marks) →
60 sIB Diploma Biology: Hydrogen Bond TrapFull lesson: Hydrogen Bonds in Water in 7 Min (6 Marks) →
60 sIB Diploma Math: What's Missing?Full lesson: Integration Basics: 6-Mark Paper 1 in 9 Min →
60 sIB Diploma Math: The Log TrapFull lesson: 3 Log Laws in 8 Minutes (7-Mark Paper 1) →
60 sIB Diploma EE: Describe or Argue?Full lesson: Extended Essay Criteria: 5 Checks (30 Marks) →
60 sIB Diploma: The Study Plan TrapFull lesson: Plan Your IB Week in 7 Minutes (5 Deadlines, 3 Moves) →
60 sIB Diploma Math: The Distance TrapFull lesson: Distance vs Displacement in 6 Minutes (10-Mark Paper 2 Breakdown) →
60 sIB Diploma Math: Spot the MistakeFull lesson: Completing the Square: 9-Mark Paper 1 in 7 Min →
60 sSee Your Marked IB Diploma ExamWatch on YouTube