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Short reviews of the various science resources and curricula I have used with my own children.
Keeping math skills sharp in the summer. Mental math "mathemagic" with Arthur Benjamin (video). 
Seven reasons behind math anxiety and how to prevent it. This article explains some of those relationships. To do that, they need to see the RELATIONSHIP between the different quantities in the problem. Students often have problems setting up an equation for a word problem in algebra. How to set up algebraic equations to match word problems. The do's and don'ts of teaching problem solving in mathĪdvice on how you can teach problem solving in elementary, middle, and high school math. Hint: it has to do with a "recipe" that many math lessons follow. Why are math word problems SO difficult for children?. Four habits of highly effective math teaching. How to calculate a percentage of a number. Multiply and divide decimals by 10, 100, and 1000. Dividing fractions: fitting the divisor. Adding unlike fractions 2: Finding the common denominator. Multiplication Algorithm - Two-Digit Multiplier. Structured drill for multiplication tables. Multiplication concept as repeated addition. Add a 2-digit number and a single-digit number mentally. Fact families & basic addition/subtraction facts. Using a 100-bead abacus in elementary math. This lesson is taken from Maria Miller's book Math Mammoth Geometry 1, and posted at with permission from the author. Measure all the angles of your quadrilateral. Draw four dots, and connect them so that you get a Protractor. If you need to, make the sides of the anglesĦ. What is the correct angle measure for the angle she measured?Ĥ. Measure the following angles using your own That she had read the wrong set of numbers on the protractor. Tasha measured an acute angle, and got 146°. The most popular version is the half disc split into 180 equal parts that each correspond to one degree. We need to read the lower set of numbers.ģ. The tool used to measure angles is the protractor. Lined up the one side of the angle with the zero of the lower set of numbers, so So that one side of the angle lines up with one of the zeros, and read that set Numbers: one set goes from 0 to 180, the other set from 180 to 0. Which one you read depends on how you place the protractor: place it Take care to read from the right set of numbers. A protractor has two sets of Read the degrees where the other side crosses the number scale. 
Line up one side of the angle with the zero line of the protractor.Place the midpoint of the protractor on the VERTEX of.
Some computers such as Windows PCs may have a setting to set “page scaling” to “none” while others such as Mac computers may have an option to set the “scale” to “100%”, either of these options will work.Īvoid using the “fit to page”, “scale to fit”, or “fill entire paper” options as these will cause the image to be printed larger or smaller than it’s actual size.How to measure an angle with a protractor:
The tape measure must be printed in the actual size of the PDF document without any scaling or resizing.
See our printable rulers or printable tape measure if you need to measure length. Find out how to use a protractor and learn tips and tricks for measuring angle. Use our degree unit conversion tool to convert the angle measurement from degrees to radians, mils, or grads. This is only needed to calibrate the rulers, the angle measurements will work at any size. Check the accuracy of the protractor by measuring a dollar bill, it should measure just over 6″ and be the same size as the base. This can help it bend around curves on a project. Use light-weight or standard printer paper to make the protractor more flexible. This can make it last longer or keep it more rigid when needed. Use heavy-weight paper or heavy card stock to get a more rigid protractor. Tips to get the most out of the printable protractor Download free printable protractor Printable Protractor Tips
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