Homework 2 - Since we need to start counting from zero (where the line isĮven) we use the top scale to determine the measure of the angle.Use of a protractor that has the shape of a semi-circle and two scales marked from 0° to 180° in both directions. Homework 1 - A protractor is used to measure angles.It really helps to do a few of these as a class. Answer Keys - These are for all the unlocked materials above.Matching Worksheet - Match the angles and its measurement.Classify and Measure Angles Five-Worksheet Pack - It doesn't say it, but we need to know if it is acute, obtuse, right, or straight.Practice Worksheet - Break out the protractors and get to work!.Classifying and Measuring Angles 5-Pack - Classifying angles for the first time.Sorry, if you are printing them out for all the kids. Guided Lesson Explanation - Each problem gets its own page.Guided Lesson - This one does not measure angles, it labels them (acute, right, obtuse).I would first go over which scale marking to use with your students. Protractors Step-by-Step Lesson- I walk you through lining it up and determining the angle.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°. We need to read the lower set of numbers.ģ. 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.How to measure an angle with a protractor:
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