[b][center][size=150]Rolling and Gravitation-Roller Coasters[/size][/center][br]Focus Areas[/b][br][list][*]Gravity and its effects on rolling objects.[/*][*]Principles of motion: shape, inertia, action-reaction, and friction.[/*][*]Roller coaster engineering and design.[/*][*]Physical activities with rolling and sliding objects.[/*][*]Mathematical problem-solving with rolling distances and speeds.[/*][/list][b]Objectives[br][br][/b]At the end of this unit, students will:[br][list][*]Understand the role of gravity and inertia in rolling motion.[/*][*]Explore the relationship between slope, speed, and distance in motion.[/*][*]Learn how action-reaction forces work through experiments and activities.[/*][*]Design and test roller coaster models using templates and basic materials.[/*][*]Apply mathematical concepts to measure and analyze rolling motion.[/*][*]Participate in physical education games to reinforce teamwork and coordination.[/*][/list][b]Materials[/b][br][list][*]Pre-made roller coaster templates (marked for cutting, folding, and gluing).[/*][*]Cardboard, paper, pool noodles, or foam pipe insulation.[/*][*]Scissors, duct tape, and glue.[/*][*]Large balls (various sizes and weights).[/*][*]Bean bags.[/*][*]Marbles or small balls for roller coaster experiments.[/*][*]Measuring tape, rulers, and protractors.[/*][*]Stopwatch or timer.[/*][*]Graphing tools or apps like Google Sheets.[/*][*]Worksheets with math problems.[/*][/list]

[b]Objective:[/b] Understand how gravity, inertia, and friction influence rolling motion.[br][br][b]1. Demonstration:[/b][br][list][*]Roll a ball down an inclined plane and discuss how gravity pulls it downward and inertia keeps it moving.[/*][/list][b]2. Experiment:[/b][br][list][*]Use inclined planes with different angles (steep vs. gentle slopes).[/*][*]Observe and measure how slope affects rolling speed and distance.[/*][/list][b]3. Discussion:[/b][br][list][*]Why do steeper slopes make the ball roll faster?[/*][*]What role does friction play in stopping the ball?[/*][/list]

[b][br][img]https://www.geogebra.org/resource/fhugeec7/K0yn9g7yIOpoKeah/material-fhugeec7.png[/img][br][br][/b] [br][b]Objective[/b]: Design and construct roller coaster models using prepared templates to explore motion and gravity.[br][br][b]1. Materials Setup:[/b][br][list][*]Provide each group with pre-made templates, scissors, glue, and duct tape.[/*][*]Include templates for straight tracks, curves, loops, and inclines.[/*][/list][b]2. Construction Task:[/b][br][list][*]Students cut, fold, and assemble tracks using the templates.[/*][*]Combine pieces to design a roller coaster model with a steep incline, curves, and gentle stops.[/*][/list][b]3. Testing and Observation:[/b][br][list][*]Roll marbles or small balls through the track.[/*][*]Modify designs to improve performance (e.g., adding supports or adjusting inclines).[/*][/list][b]4. Reflection:[/b][br][list][*]Which designs worked best and why?[/*][*]How did gravity, inertia, and friction influence the results?[/*][/list]

[b]Objective: [/b]Solve simple math problems related to rolling distances, slopes, and speed.[br][br][b]1. Data Collection:[/b][br][list][*]Students time how long it takes for a ball to roll down a slope using a stopwatch.[br]Measure the length of the slope using a measuring tape.[/*][/list][b]2. [/b][b]Math Problems:[/b][br][list][*][b]Problem 1:[/b] A ball rolls down a slope that is 6 meters long in 3 seconds. What is its speed[/*][*][b][color=#ff0000]Answer:[/color][/b] Speed = Distance ÷ Time = 6 m ÷ 3 s = 2 m/s.[/*][/list][list][*][b]Problem 2:[/b] If a ball travels 5 meters in 2 seconds, how far will it roll in 4 seconds at the same speed?[/*][*][b][color=#ff0000]Answer: [/color][/b]5 m ÷ 2 s = 2.5 m/s; 2.5 m/s × 4 s = 10 meters.[/*][/list][list][*][b]Problem 3:[/b] A slope is 10 meters long, and the ball travels half the length. What fraction of the slope did the ball cover? [/*][*][b][color=#ff0000]Answer:[/color][/b] 5 m ÷ 10 m = 1/2[/*][/list][b]3. Graphing Task:[/b][br][list][*]Create bar graphs comparing the speeds of balls on different slopes.[/*][/list][b]4. Group Discussion:[/b][br][list][*]Why does the angle of the slope affect speed?[/*][*]How does friction slow down motion?[/*][/list]

[b]Objective[/b]: Explore Newton’s Third Law of Motion and inertia through hands-on experiments.[br][br][b]1. Newton’s Cradle Demonstration:[/b][br][list][*]Observe energy transfer when one ball strikes a series of stationary balls.[/*][/list]

[b]2. Inertia Experiment:[/b][br][list][*]Place a ball on a flat surface and push it gently. Discuss how it keeps moving until friction or another force stops it.[br][/*][/list][b]3. Action-Reaction Activity:[/b][br][list][*]Roll a ball toward a wall and observe how it bounces back.[/*][*]Use a smartphone app like [url=https://phyphox.org][b]Phyphox[/b][/url][b][/b] to measure acceleration or speed.[/*][/list]

[b]4. Reflection[/b]:[br][list][*]How does Newton’s Third Law apply to rolling objects?[/*][/list][b][size=150][br][/size][/b]Check out the following website to find out how to build up a [b]Balloon Rocket[/b]! This is an experiment which applies Newton's three laws of motion, and allow students to visualize the effect of different forces on the motion of the rocket.[br]

[b]Game 1: Big Ball Rolling Tag[/b][br][list][*]Teams use large balls to "tag" other players by rolling the ball toward them.[/*][*]Tagged players join the tagging team.[br][/*][/list][b]Game 2: Rolling Ball[/b][br][list][*]Students sit in a circle and roll a ball to teammates across from them.[/*][*]Introduce rules like rolling with one hand or rolling at different speeds.[br][/*][/list][b]Game 3: Bean Bag Slide[/b][br][list][*]Players slide bean bags toward a target on the floor.[/*][*]Adjust target distance for added difficulty. [/*][/list][b][img]https://www.geogebra.org/resource/yf3brbfs/nmteBNTUgQ7ZxbzD/material-yf3brbfs.png[/img][br][/b]

[b][size=150]STEPAM Components[/size][br][/b][list][*][b][size=150]Science:[/size][/b] Explore gravity, inertia, and motion through experiments and observations.[/*][*][b][size=150]Technology:[/size][/b] Use measurement and graphing apps to analyze rolling motion.[/*][*][b][size=150]Engineering:[/size][/b] Build and test roller coaster models using templates and basic materials.[/*][*][size=150][b]Physical Education: [/b][/size]Participate in rolling games to develop teamwork and coordination.[/*][*][b][size=150]Art:[/size][/b] Decorate roller coaster models with creative designs.[/*][/list]