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'Metric weights: different units' for 4th grade
4th grade / Measurements / Compare: weight / Metric weights: different units
Compare weights in different metric units
To compare weights in different metric units and choose the heaviest item, you need to first convert all weights to the same unit. The most commonly used metric units for weight are grams (g) and kilograms (kg), with 1 kg equal to 1,000 g. Here's how to compare weights in different units and find the heaviest item:
- Convert all weights to the same unit: Choose a common unit, either grams or kilograms, and convert all the weights to that unit. This will make it easy to compare the weights.
For example, let's say you have three items with the following weights: 1.5 kg, 950 g, and 1,250 g. To compare these weights, convert the one in kilograms to grams: 1.5 kg x 1,000 = 1,500 g - Compare the converted weights: Now that all the weights are in the same unit (grams, in our example), you can easily compare them to determine the heaviest item. In out example, you can see that the first item has a mass of 1,500 g which is greater than 950 g or 1,250 g so it is the heaviest item.
This topic gives you the mass of 3 items in mixed decimal units. You are required to determine which is the heaviest item by converting all items to the same units and comparing them.
With these interactive math lessons you will be learning "Metric weights: different units" from
4th grade / Measurements in 3 easy steps. The math in our lessons consists of 4 questions that ask you to compare weights in different metric units and choose the heaviest item.
smartphone | 0.14 kg |
toy pig | 704 g |
pack of cards | 0.11 kg |
wooden table | 11420 g |
metal table | 14.3 kg |
plastic table | 12011 g |
marble | 0.01 kg |
tennis ball | 58.5 g |
golf ball | 0.06 kg |
bowl | 0.07 kg |
cup | 60 g |
saucer | 80 g |
There are 3 easy math lesson activities in this "Metric weights: different units" tutorial. These activities progress step by step to help you the learner gradually master this math topic. The activities are based on "3 stage questioning", a method of learning that quickly and easily builds your confidence as you work through the short series of lessons that strengthen your knowledge of the math that you want to learn.
When you have completed the tutorial for a topic, you should try some of our games before finally doing the test for your chosen topic. See the Help box below for detailed instructions on how to use the lesson activities to help you learn your math more easily.
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'Metric weights: different units' for 4th grade
Introduction to the math topic
You start the tutorial with a lesson that introduces the math you will be learning. You will see a set of questions one at a time, and for each question you will see the written answer and also hear the answer to that question.
Repeat the question/answer by clicking on the brown speaker sign. Repeat the question/answer and expand the question graphic by clicking on the question box. Move between questions using the arrow buttons below the question. If there is additional information available for your chosen topic, the "i" button on the left upright bar will be brown on white. Click on the button to load the additional lesson information into the main interface.
Either / Or math lesson
This lesson moves on from the "Introduction" lesson and offers you two possible answers to each question. So, you will see a question then a voice will ask "Is this ... or is it ..." and you will have to choose which of the answers is the one that matches the question.
You choose an answer by clicking or tapping on one of the two answer boxes below the question. You can play the audio for each answer again by clicking on the speaker icon beside the written answer (if robot speech is available and enabled). The program will let you know each time whether you answered correctly. A star will light up red for a wrong answer or white/black for a correct answer.
This lesson asks you the questions in a random order compared to the introduction. At the end of the lesson, you can choose whether to repeat the lesson or move on to the next one.
What is it? math lesson
The final lesson of the tutorial shows you multiple possible answers for each question - you must choose the correct one. You are asked a question and below it are a list of two, three, or four possible written/numeric answers from this topic. Pressing the speaker icon will play the math audio for that answer.
For each picture, click on the answer that matches the question. The program will tell you whether you are right or not. As with the Either / Or activity a system of stars indicate your right and wrong answers. The What is it? lesson will show you all the questions you learned in the Introduction but in a random order.
When you complete the "What is it?" lesson, you can choose whether to go on to play some games with this topic, or whether you want to repeat some or all of the lesson activities in this tutorial. You should expect to get 80% of the answers correct in most of the activities before trying some of the Math games with this topic.
