Building a Catapult

by Stephen Alwon and Sherwin Fernandes

Introduction

Anchor Video

Concept Map

Project Calendar

Lesson Plans

Letter to Parents

Assessments

Resources

Modifications

Grant

 

 

Monday

Tuesday

Wednesday

Thursday

Friday

Week 1

Anchor Video Discussion: what is force?

Linear Relationships: students explore how spring extension varies with force.

Mapping projectile motion using a stroboscope.

Looking at the horizontal component of the motion diagram. Using Linear regression to graph.

Linear relationships

Y=mx+b.

(y-y1)=m(x-x1)

Week 2

Looking at the y component of the projectile diagram

Quadratic relationships. Examine how the Area of a square is proportional to the square of the side length.

Graphing quadratics from data and equations.

Finding quadratic roots: factoring

Finding quadratic roots: quadratic formula

Week 3

Fitting data to a linear or quadratic equation

Cannon firing applet: what is the best angle to fire at?

Similar triangle exploration: how are angles related?

Comparing the ratio of side lengths with angle. Plot on graph to get sin, cosine, and tangent.

SOH, CAH TOA,

Week 4

Basic physics: force, conservation of energy

Potential/ kinetic energy exploration

Conservation of energy between kinetic and potential energy

Measure kinetic and potential energy of a falling ball.

Firing a projectile: ramps or catapults?

Week 5

Describe project, get in groups and work on designs.

Students continue working on designs.

Students estimate how far the launcher will fire, based on their design.

Students start building when the design is approved.

Build, test

Week 6

Initial test is run when the prototype is complete. Results are discussed within the group and modifications are proposed

Students continue building and making improvements.

Final build day, and testing in class

Presentations

Presentations