Calculations and Measurements

Ratios are used as a means of comparing two or more items that share some correlation or connection. When you equate two or more ratios then you are now solving for proportion. Below is a link to Purplemath.com that explains ratios and proportions in an easy to understand way. Ratios - Purplemath.com

View the post "Metric Conversion (Basic)" before reading this post in order to look at the basic concepts. In this lesson we look at how to convert non-linear measurements (i.e. square, cubic, etc). To convert these units follow the steps below e.g. Convert 28 m 2 to cm 2 Step 1: Subtract the respective levels metre = 4 and centimetre = 2 => 4 - 2 = 2 Step 2: Multiply your answer from step 1 by the power to which the unit is raised => 2 * 2 = 4 Step 3: Determine the multiple of ten (10) to be used Since the answer from step 2 is 4 then write 4 zeros after 1 to get 10000 Step 4: Determine whether to multiply or divide Since the answer from step 1 is positive then you multiply => 28 m 2 = 28 * 10000 cm 2 = 280000 cm 2 e.g. Convert 14 cm 2 to m 2 Step 1: Subtract the respective levels centimetre = 2 and metre = 4 => 2 - 4 = -2 Step 2: Multiply your answer from step 1 by the power to which the unit is raised => -2 * 2 = -4 Step 3: Determine the multiple of ten

The metric system is widely used around the world. Therefore skilled technicians need to be able to use the metric system effectively. The metric system is a base ten system based on similar principles as our base ten counting system. The table on the left shows the various units and their respective "levels" in comparison to the other units. If you memorize the table then it becomes very easy to convert from one unit to the next. To convert from one unit to the next you need to determine the equivalent value of 1 unit of the original unit in the required unit. This can be done by applying the following steps. e.g. Convert 28 m to cm Step 1: Subtract the respective levels metre = 4 and centimetre = 2 => 4 - 2 = 2 Step 2: Determine the multiple of ten (10) to be used Since the answer from step 1 is 2 then write 2 zeros after 1 to get 100 Step 3: Determine whether to multiply or divide Since the answer from step 1 is positive then you multiply => 28 m = 28 * 100 cm = 2800

Click on the link below to download or read the assignment online. Basic Operations For further practice sheet you can visit teachnology.com by clicking on the link below teachnology.com worksheets

Below I have posted links to some of the other blogs that I am managing Communication Creative Expressions Level 3 Communication The link below is to a blog created by Mr. Mignott Carry Out Data Entry  Enjoy!!

Sometimes videos are more more effective learning tools than textbooks. Below are some links to some video tutorials for different skill areas. Plumbing -Mister Plumber General Construction-Expert Village Electrical Math The links above will take you a you tube video. On the right of the screen there will be a list of other videos on the same or similar topic.

Below you will find some links to websites that hosts online games to help your math skills. Xp Math.com arcade games (click the link on the left to see the menu page where you can select games based on particular topics)

Many persons have a fear of Math even though mathematical principles and concepts are used everyday. However, while the reality is that a number of persons have numeracy (i.e Math related) challenges, mathematical concepts can be easily grasped when contextualized properly. Throughout your course you will be required to master various mathematical principles but do not despair! this blog has been designed to provide you with some assistance. So relax! and join me on a journey that will end in you acquiring the requisite mathematical skills needed for skilled technicians.