# ALEX Lesson Plan

## Optimal Snow Sled Experience

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This lesson provided by:
 Author: Megan Nichols System: Chickasaw City School: Chickasaw City Elementary School
General Lesson Information
 Lesson Plan ID: 35513 Title: Optimal Snow Sled Experience Overview/Annotation: Students will determine the difference between balanced and unbalanced forces through an experiment. The experiment consists of a student-created scaled snow sled model going down a teacher-created ramp. Students will plan to change one variable, collect data, and chart the data graphically. Students will change a variable such as: number of students riding the snow sled, size of the child (children) riding the snow sled, direction, position on the hill the snow sled is released, position of children on the sled (sitting, standing, laying), friction caused by materials that makes up the sled, and air resistance caused by an object such as a parachute. Students will collect and chart data of each experiment graphically in order to determine the longest snow sled ride.This lesson results from the ALEX Resource Gap Project.
Associated Standards and Objectives
Content Standard(s):
 Science SC2015 (2015) Grade: 3 1 ) Plan and carry out an experiment to determine the effects of balanced and unbalanced forces on the motion of an object using one variable at a time, including number, size, direction, speed, position, friction, or air resistance (e.g., balanced forces pushing from both sides on an object, such as a box, producing no motion; unbalanced force on one side of an object, such as a ball, producing motion), and communicate these findings graphically. Alabama Alternate Achievement Standards AAS Standard: SCI.AAS.3.1- Identify the effect of a force (e.g., push, pull, gravity) applied to an object.

Local/National Standards:

Primary Learning Objective(s):

• Students will use their knowledge of balanced and unbalanced forces to claim or hypothesize how a scaled model can be created to achieve the longest snow sled ride and document the hypothesis in their journal.
• Students will use their knowledge of balanced and unbalanced forces to communicate and document evidence to support the claim about the design of their sled.
• Students will create a snow sled to determine the effects of balanced and unbalanced forces on the motion of an object using one variable at a time.
• Students will use documentation and data collected to present findings on a chart or multimedia tool.