Year 5

THE WOODEN CRANE

In UOI 2 I and my classmates were learning about simple machines. Then, for the summative assignment, the teacher told us to create a simple machine. The wooden crane is a device that I have created using a simple machine for an experiment. A crane is for lifting objects. The size of my crane is 50cm tall, 5cm wide, and 60cm long. I made the frame using eight wooden poles, 2 pulleys, a hook, a wooden platform, duct tape, nails, and a rope. The way to use it is by putting an object on the hook of the pulley. Then pull the rope so that the object is lifted upwards. I bought the materials from a construction shop and the frame was made by acarpenter. It took one week to complete the device. The forces that are involved are effort, friction, and gravity. When construction workers are using a crane, the pulley helps the rope to lift the load. For example, when construction workers want to lift concrete, the pulley spins like a wheel to help the person or the machine to pull. The learner profile attribute that I demonstrated is being an inquirer because after you do a test you get another question and you do it and so on.

For the UOI 2 project, I am building a type of modified pulley combined with a wedge/hook. And I use forces like gravity to pull down the hook thingy at the edge of the rope and basically use the forces to our advantage. And add the extension and a new purpose. My goal is to create a new type of machine that helps people with fishing problems or cant travel in the boat’s in areas of severe poverty or don't have supplies to build boats. I think that it will make fishing use less force because the machine is based on pulleys and pulleys are supposed to make you use less force. The learner profile attribute I demonstrated during this project is knowledgeable because I used my knowledge from Brainpop, the simple machine and forces rotation activity, simple machine lessons, and my research in my simple machine. I also used research skills because I researched for the machine, synthesized, and put the resources to. The materials in this model are tape, long toothpicks, chopsticks, and a toilet paper roll. What I learned from this project: don't underestimate the functions of simple machines.