Lesson Plan

• Describe vector representations of displacement, velocity and acceleration in two‑dimensional motion.
• Apply the constant‑acceleration equations to find horizontal and vertical components of a projectile’s motion.
• Calculate time of flight, maximum height and horizontal range for a given launch speed and angle.
• Identify and correct common misconceptions such as sign of g, mixing distance with displacement, and unit errors.

• Projector and screen
• Whiteboard and markers
• Graph paper and rulers
• Scientific calculators
• Worksheet with projectile‑motion problems
• Printed summary of vector formulas and equations

Show a short video of fireworks to spark interest and ask students how they think the shells travel. Review 1‑D kinematics (constant acceleration) and ask learners to state the success criteria: they will be able to model and solve projectile problems using vector methods.

1. Do‑now (5 min): Quick quiz on displacement vs. distance and sign conventions for acceleration.
2. Mini‑lecture (10 min): Introduce vector notation for r, v, a and derive the constant‑acceleration component equations.
3. Guided practice (12 min): Work through the example problem (20 m s⁻¹ at 30°) on the board, prompting students to fill steps on their worksheets.
4. Interactive simulation (8 min): Use a projector‑based projectile‑motion app; students predict range and height, then compare with calculations.
5. Common‑mistakes discussion (5 min): Highlight sign of g, zero horizontal acceleration, and unit consistency.
6. Independent practice (10 min): Students solve two new projectile problems, checking answers with a partner.
7. Check‑for‑understanding (5 min): Exit ticket – one short problem asking for the maximum height of a given launch.

Summarise how vector components simplify projectile analysis and revisit the key formulas for T, H and R. Collect exit tickets and clarify any lingering doubts. Assign homework: a set of three projectile‑motion questions requiring derivation of the range formula and analysis of launch from a height.