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With this science project, you will try your hand at catapult technology. If one were to use a golf ball instead of a whiffle ball, would the ball go farther, everything else being equal? Keeping what you know about force and motion in mind, your challenge is to design the catapult that will move your materials the furthest. [Grades 6 – 8], Make two-dimensional and three-dimensional representations of the designed solution. 2. Students will develop an understanding of the relationships among technologies and the connections between technology and other fields of study. Thanks for your feedback! Tables: great folding picnic table bench for outdoor eating. To get a better understanding of accuracy and precision and how they relate to the catapult activity, consider the example of shooting arrows at a bull's-eye target. This includes the basic concepts of position, velocity and acceleration and their relationships to one another. The gravitational force of Earth acting on an object near Earth's surface pulls that object toward the planet's center. Catapult Learning's signature reading and math intervention programs are now available online! American Revolution- The objective for this lesson is to engage the students in a role-playing experience in which they will be debating various points of views from the people of the American Revolution. What are catapults used for? Note: these kits can be constructed and assembled by the teacher or borrowed from CCMR. Vt at the maximum height is zero, thus we have the equation Vv = gt. This can easily be proven mathematically, and has long been known by the military artillery folks. Encourage students to discuss the physics principles and vocabulary they learned as they construct their catapult to increase their understanding. 2. If you've ever launched something from a plastic spoon (hopefully not food at your brother or sister! Nutrition lesson plans, along with adaptive physical education lesson plans were based off of the TRAIN assessment program implemented by Special Olympics. Using a rubber-band-powered catapult you will send ping pong balls flying through the air. WP Cumulus Flash tag cloud by Roy Tanck requires Flash Player 9 or better. / H .75 in., with holes drilled approx. *Please note, eGFI has supplied additional instructions, above, to clarify the construction of the catapult. Galileo concluded that the path of any projectile is a parabola (see Figure 1).Figure 2: Accuracy vs. precision.copyrightCopyright © NOAA http://celebrating200years.noaa.gov/magazine/tct/tct_side1.html. They investigate how different catapults designs work, and then use that information to construct their own catapult. Catapult Post-Lseson Quiz: At lesson end, have students complete the Catapult Quiz again to assess what they learned. Two important equations exist for position in projectile motion with no friction. Have the students engage in a discussion on how to adjust the catapult to vary the distance to which it can throw a projectile (refer to Activity Sheet 1: Catapult Variables for the list of adjustments which will provide variables to catapult performance). Substituting in the equation above we have: H = ((Vv^2)/g) – (1/2) x g x (Vv/g)^2 The goal of these lessons is to integrate mathematics, medieval history (specifically knights and Participates in the brainstorm and shows an understanding of the physics related to the catapult. Compare pre/post answers to gain an understanding of how much students understood and retained from the lesson. Alignment agreement: Please note that there is limited availability of kits, which must be requested 2 weeks prior to shipment date. People were placed in a seat at the long end and successively ducked into a pool of water. The Figure 2 diagram is helpful to review with students the concepts of accuracy and precision. Web Resources Have students answer questions on the Engineering Fun! Achievement begins with LessonHub. 4. 2. What do you think we should do next? Provides an in-depth explanation of findings, making good use of vocabulary terms. What do they consist of? energy storage devices. Catapult Design Lesson Plan Purpose: This lesson consists of several related modules can be used together to develop a sense of the engineering design process or modules can be used individually. One Sentence Summary - At the end of each benchmark lesson, the students will provide the teacher with a one sentence summary of what they learned that day. Summer Programs (Teachers) accuracy : The degree of closeness of a measured or calculated quantity to its actual (true) value. geometry: An area of mathematics that studies shape, size, position and properties of space. The contents of this digital library curriculum were developed under a grant from the Fund for the Improvement of Postsecondary Education (FIPSE), U.S. Department of Education and National Science Foundation GK-12 grant no. Loading... Unsubscribe from Cierra Pettit? Catapult Presentation Notes. Once the spring is released, it will return to its original configuration (usually expending the stored energy as rapidly as possible). Catapult’s writing program is like an MFA program without barriers—affordable, day-job-friendly classes for emerging and established writers. 6. Here is a sample of one the worksheets: Step 2: Gather all the materials and build your catapult following the directions below. Do you agree with this alignment? Make sure no students are in the catapult’s trajectory before triggering it. d(h)/d(theta) = (2/g) x (V^2) x ((-sin(theta)^2) + (cos(theta)^2) [Grades 6 – 8], 2 Machine Screws, for arm placement (1/4 x 20 x 4 1/2 in.) Does not fill out worksheet. Caution: The length of chain with the gate-hook and attached string which acts as a trigger device should always be mounted on the catapult base, with the separate gate-hook eye ONLY being mounted on the catapult arm as shown above. The end result could be the wonderful and perfect toy for kids. i.e., most hands-on activities are part of lessons, lessons are grouped into multiday Answer: No, the friction would be much greater at the higher speed and the distance would be less than two times. Now install the second bolt as a stop for the arm. (with holes drilled at 5 in., 6 in., 7 in., 8 in. (Answer: Tight.) Precision is the degree to which several measurements provide answers very close to each other. Shows no understanding of catapult physics. If a projectile is launched from an angle greater than 45Âº, where will it go? This is a 82 slide PowerPoint presentation with built-in class notes (red slides), challenge questions with answers, video links, build a spoon catapult project, and more. The catapult is still in use today, although radically different from those used in history. If time permits, have the students experiment with variables (Activity Sheet 3) to refine and improve performance. Even a ping-pong ball, which is about the same weight as a whiffle ball, would go farther due to the smooth surface instead of the holes. 15 folding picnic table set, picnic folding bench Setting this equal to zero makes sin(theta) = cos(theta) This is only true if theta is 45 degrees. Catapults Lesson Cierra Pettit. 1. Answer: The ball will act like a falling body with an initial velocity V. The equation for a falling body is as follows: Where H is the height in feet. Differentiating H with respect to theta and setting to zero. / Top 2 in. Does not participate in brainstorm. One concept is force. If you were to do the project on the moon, which of the three balls would you expect to go the shortest distance? The velocity of the projectile can become quite large when the ratio of the lengths of the lever arms is great. The ballista was about 10 times larger than a catapult and threw large stones. Distribute Activity Sheet 5: Catapult Science Challenge Questions as a homework assignment to each student. Galileo reasoned that a projectile is not only influenced by one motion, but by two. Students will act just as real scientists by working through the engineering design process to plan, build, and a test a catapult they made from craft sticks and rubber bands. H = (1/2) x (45^2)/32.2 = 31 feet, 10. Is not clear in explanation of findings. Provides a limited explanation of findings. Let's say we want our catapults to launch Ping-Pong balls at a certain target. Identify Strengths and Opportunities, With Clear Next Steps Identify the strengths and opportunities for improvement through our school needs assessment process called Collaborative Quality Analysis (CQA). Using a rubber-band-powered catapult you will send ping pong balls flying through the air. projectile: An object that is launched or thrown, usually in the air, by a force. Physics Agricultural YWBAT: Apply the technological design steps to build a marshmallow catapult that uses the allotted materials to launch a marshmallow at least 5 meters in the air and 9. Answer: Vertical velocity is V * sine(theta) and the horizontal velocity is V * cosine (theta), where theta is the angle between the velocity, V, and the horizontal. Think of the simplest type of catapult possible: a plastic spoon. Lesson PDF. The free ends of the wooden pieces are connected together with a rope. 9. Distance = Vh x T = 78 x 2.8 = 218 feet. Ball Roll: Have the children try to roll the balls into the hole in the middle of the parachute. Subject Areas: Civil (Grade 6), Specify criteria and constraints for the design. Nuclear 8. Catapult Pre-Lesson Quiz: Students complete the Catapult Quiz to assess prior knowledge about catapults, projectile angles, accuracy, precision and force. Catapult Presentation. The same goes for stretching a spring; when released, it will collapse back to its original configuration. A catapult is an ancient weapon or a ballistic device used mainly to launch stones, spears, and projectiles to a greater distance without the help of explosives. Would you expect it to go twice as far? Since both H and T are unknown, we need a second equation. How far would the ball go with no air friction in question 9? Slide 1: When you hear the word "catapult," you might only think of devices that were used during battles in the Middle Ages. Build Catapult Model C4 and try it out. Catapult STEM ChallengeThis catapult challenge allows your students to apply what they know about different forms of energy while using a hands-on approach. Some activities or lessons, however, were developed to stand alone, and hence, they might not conform to this strict hierarchy. Students gain engineering experience while learning principles of physics and working with the scientific processes of experimentation and trial and error. The aircraft carrier catapult uses steam as a source of energy to push a piston along a linear track in the aircraft carrier’s deck. They use their catapults to participate in a game in which they launch Ping-Pong balls to attempt to hit various targets. Teacher Training The first two types of throwing machines were the catapult and the ballista. A parabola is a symmetrical curve, meaning that the downward trip of a projectile is a mirror image of the trip up. 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