How to learn geometry and protractor
Geometry, like any exact science, does not tolerate a disdainful attitude. And to help her learn the basics, children should hold a small quest for needlework. Its main theme will be: how to make protractor. To do this, you need a little: scissors, glue, A4 paper, thick cardboard, pencils, markers, paints, brushes, different decor, a printer, well, where without a ton of patience and a bag of inspiration! The need to perform such a task before the child can be argued by the absence of such an important corner measuring device in the store or stimulated by its more familiar methods.
The first thing that will fall solely on your shoulders is the preparation of a template. At present, it is not difficult to find a suitable variant. If you own graphic editors, you can create a unique sample with your family photo, names, characters of your favorite cartoons. But do not get carried away, after all, you get only a colored paper protractor - print it out, and joint leisure with the elements of training will be frustrated.
A much better solution will be to prepare a contour with a digital scale, which will be painted and perfected in every possible way. Also it is necessary to decide what type of protractor to print - round for simplicity of display, semicircle with values from 0 to 180 degrees. If such simple methods are not for you, we immediately turn to the methods of representation in rational trigonometry.
Excursion into history and a little bit about modernity
Before you make a final decision on which protractor to print, you can tell your child about the history of this tool (he comes from ancient Babylon), acquaint with the sexagesimal system of calculus and its basic concepts - degree, minute, second.It is not superfluous to touch on the use of angles in modern society, in geodesy and cartography, in construction, in machine building, etc., to show the main types of angles-acute, blunt, direct, unfurled, and explain the difference between them. It is recommended that we propose to display these corners on our own so that they can be used to create drawings of certain things. While this is being done, check how the protractor is printed: you need to make sure of the quality of the template prepared in advance and at its high resolution. The printer must also display data without distortion and distortion. You may need to clean it or adjust it.
The creative process
After deciding which type of protractor to print, you just click on the "Print" button (you can specify several copies), and then cut out the part along the contour.It is worth to be careful, because any inaccuracies will be in sight. And then proceed to decorating the protractor. To do this, anything is suitable, the option depends only on how much you are passionate about this business.
All kinds of coloring compounds, cotton threads and ribbons of various shades, wool, cotton wool, stickers, beads, rhinestones and bows will find use, because in this case their excess will not be a disadvantage. After the end of the process, the artistic value of the protractor will increase many-fold, it can be pasted onto the cardboard and made a hole in the mark where the measurements begin. Despite the fact that this self-made specimen can be less convenient to use than its transparent factory-made counterparts, it will not leave anyone indifferent due to its cute appearance and original design. Such joint activities with the child will give you many pleasant moments in the future.