Today in class we did a warm-up at the beginning of class where students were asked to come up with the conversion factors between two metric units. After that we talked about measurements and how to make them using a graduated cylinder for taking measurements of volumes of liquids and how to read a triple beam balance for measurements of mass. All of this information is already in your notes for lesson 1.3 in your binder.
When reading a graduated cylinder as seen in the image to your left you will need to read the bottom of the meniscus. What is a meniscus? The meniscus is the smile shaped curve the line a liquid makes when in a graduated cylinder. To read this accurately you will need to become eye level with the meniscus as demonstrated in the image to the left. The bottom of the smile is where you would make the measurement. For example of the water in the graduated cylinder to the left would be 10.4 milliliters (mL). You will need to know how to do this for the test.
The class then watched a video about precision and accuracy. The video will be attached below to watch. You DO NOT need to take notes.
We then did a Measurements Lab where students worked in preassigned groups to answer questions where they measured the lengths of different objects in class. When they were finished with this portion of the lab the group then was challenged with writing out the procedures or steps that were needed to determine the mass of 100 mL of water using only a scale and 100 mL graduated cylinder. These steps needed to be clear enough that they would be able to hand them to a student who missed class and they would be able to follow them and get the same information.
Attached at the bottom of the post will be the measurements lab. Students who missed this lab will have to talk to Mrs. Spencer about a time in which they can come in and complete the lab. Students were also asked to work on their 1.2 and 1.3 homework (found in their notebook). There will be a quiz next time we meet in class over stuff from lesson 1.2.
When reading a graduated cylinder as seen in the image to your left you will need to read the bottom of the meniscus. What is a meniscus? The meniscus is the smile shaped curve the line a liquid makes when in a graduated cylinder. To read this accurately you will need to become eye level with the meniscus as demonstrated in the image to the left. The bottom of the smile is where you would make the measurement. For example of the water in the graduated cylinder to the left would be 10.4 milliliters (mL). You will need to know how to do this for the test.
The class then watched a video about precision and accuracy. The video will be attached below to watch. You DO NOT need to take notes.
We then did a Measurements Lab where students worked in preassigned groups to answer questions where they measured the lengths of different objects in class. When they were finished with this portion of the lab the group then was challenged with writing out the procedures or steps that were needed to determine the mass of 100 mL of water using only a scale and 100 mL graduated cylinder. These steps needed to be clear enough that they would be able to hand them to a student who missed class and they would be able to follow them and get the same information.
Attached at the bottom of the post will be the measurements lab. Students who missed this lab will have to talk to Mrs. Spencer about a time in which they can come in and complete the lab. Students were also asked to work on their 1.2 and 1.3 homework (found in their notebook). There will be a quiz next time we meet in class over stuff from lesson 1.2.
metric_measurement_lab.docx |