Students observed and drew the crystals from our evaporated citric acid and epsom salt (mystery substance). The crystals looked very different from the kosher salt crystals that we evaporated several weeks ago. Students also wrote notes into their science journals about the saturation experiments that we conducted last week. Today we reviewed with a quick video and students read an article on citric acid and answered questions about it.
Below you can also see the experiment that Scarlett did by evaporating a salt-water solution dyed with red food coloring. The crystals still have the square shape with the x, but it is red from the solid color left behind after the liquid was evaporated. So cool, thanks for sharing Scarlett! Coming up this week, we work on determining which solutions are more concentrated than others using various techniques :)
0 Comments
We reviewed division on Monday and took the chapter 3 test today. Tomorrow we will take a fractions pre-test to determine which skills student have mastered and give us direction on what to focus on in the coming weeks.
We have been using different chemicals to test for solubility. Students started with kosher salt and added it to 50 ml of water until the solution was saturated. We found that citric acid is moe soluble than kosher salt and that epsom salt has about the same solubility as epsom salt. On Monday we will observe the citric acid and epsom salt crystals that we evaporated after each experiment.
This week has been a blur with snow days and NWEA testing. We have been practicing and reviewing division with an emphasis on understanding what the remainder means and what to do with that remainder when it comes to answering the question asked. Students did a review quiz online today and we will use those results to gear our review on Monday.
Chapter 3 Test on Tuesday Today we reviewed homework from Tuesday on interpreting the reminder in a division problem. We then took notes on how to check division problems using multiplication (particularly when there is a remainder) as this was something that many students missed on the check-in quiz from last Friday. Students used the reminder of the period to practice division on ixl.
The assignment is due by Monday (Grade 5: D3, D4, D5 to 90%) We watched a video today demonstrating the difference between mixtures and solutions and reviewed the study guides (see below) that students got on Friday. Each student should use their study guide to study for the quiz that is tomorrow.
Today students worked in groups to determine a procedure for separating a mixture of gravel, powder and salt into separate containers. Groups had to decide what materials to use and in what order to try to get the three components apart. All groups were successful in the end.
Quiz on investigation 1 on Thursday (use study guide to practice) Today we worked on interpreting the remainder of a division problem and understanding that what you do with the remainder depends on the context of the question. We discussed using the same problem in different context to demonstrate how in some cases you can ignore the remainder, some you have to round up to include it and some you can report the remainder as a fraction or decimal.
Homework tonight: page 231-232 (make sure to label answers with the appropriate unit) |
Archives
April 2020
|