In a similar way, each whole is divided into 4. In a one inch ruler, the first mark after 0 would be at ¼, the second one at ½, the third one at ¾, and the fourth one at 1.
When measurements on a ruler are till the quarter of a whole, each whole is equally divided into four. There would be 24 marks on the 12-inch ruler. In an online 12 inch ruler, the first mark after 0 would be at ½, the second one at 1, the fourth one at 1½ and so on. When measurements on a ruler are till the half of a whole, each whole is equally divided into two. This would help them relate the ruler markings with the number line.
#ONLINE MM RULER HOW TO#
Children have already learned how to plot or read fractions on a number line. They are familiar with the equivalence between fractions and fraction models to represent the fractions. They already know that two halves or four fourths make a whole. In third grade more accurate rulers, marking halves and quarters are introduced to kids.Ĭhildren in grade 3 have a basic knowledge of fractions which can be applied here. In second grade, kids measured lengths in whole units using metric and U.S. SplashLearn feature practice problems for measuring the lengths of objects to the nearest inch/ half an inch and a quarter inch. The difficulty level can be adjusted by choosing the appropriate units as well as the division of each whole. Online ruler games are available in metric and customary units. Or the ruler game for measuring a line segment shown using the ruler provided can also be very effective. Measuring the familiar images that they see around can be fun math games for kids. There are many online math activities that allow kids to get practice in estimating and measuring the length of a given object. By doing this, these can be made to printable rulers. There are many online rulers available which can be resized to a real size ruler. A 6 inch ruler can be used to find the lengths of pencils, pencil box etc. A 12 inch ruler would be adequate for measuring a black board or a desk. Teachers can provide the children different types of rulers explaining about reading a ruler and ask the children to measure the object they see around and note down the ruler measurements. The ruler reading is something that kids learn in 2nd grade. Children should be taught how to read a ruler in inches or centimeters using these manipulatives. They should be introduced to measuring objects using different types of metric rulers and inch rulers. Math Manipulatives and ActivitiesĪ first-hand experience of measuring the things around them using actual rulers would be an interesting activity for kids. Triangular rulers are less likely to use in lower grades compared to scale rulers.Īn angle, an important mathematical concept that would be introduced to children in higher grades, can be measured using a protractor. Triangular scale rulers have different units on each of the sides. The below picture is of a centimeter ruler that measures up to 20 cm. Line segments can be measured using scale rulers. There are many types of rulers serving different purposes. In mathematics, children need to measure many things like a line segment, angles, sector etc. Rulers are mainly used for three purposes: to measure, to draw straight lines and as a straight guide for cutting with a blade. Lengths are more important than many other measurements in the fields of geometry, technical drawing, civil engineering etc. Customary units are widely used in the United States of America.
Capacity can also be measured and the customary units are ounces, pints, cups, quarts, gallon etc. Customary units for length include inches, feet, yards, miles etc.
For measuring lengths the metric units are millimeter, centimeter, meter, kilometer etc. Metric units for weight include milligram, gram, kilogram etc while customary units are ounces, pound, ton etc.
For measuring weights, capacity, and length, there are mainly two types of units: metric units and customary units. Time can be measured in seconds, minutes and hours. One can measure time, weight, length, capacity etc. A Dutch proverb says “Measure thrice before you cut once”, this explains the importance of any type of measurements in one’s life.
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