G6 Week 11 – S2

Friday, April 27th

Today in science: In an attempt to allow students to gather a more complete data set for their HCl/Mg experiment, Dr. Merritt asked students to repeat yesterday’s experiment (see below) and record all of their observable and measurable data in their lab notebooks.

Homework: Students have been asked to complete a Get-To-Know-an-Atom sheet this weekend in which they learn a little bit about magnesium (Mg) atoms. Dr. M handed out these sheets in class and recommended to students that the Wikipedia page about “magnesium” will supply much, but unfortunately not all, of the information needed to complete the paper. For a useful image showing the location and number of protons, neutrons, and electrons found in a single Mg atom, Dr. M recommends this image: https://goo.gl/fDJZhG

Thursday, April 26th

Today in science: In an attempt to determine if/whether students understood the notion of a “fair test,” Dr. Merritt asked students to design an experiment with a limited set of materials. For their investigation, teams of 2-3 students were give 4 test tubes, 1 test tube rack, 1 thermometer, 1 graduated cylinder, 4 Mg metal ribbons, safety glasses, 0.1 M HCl, and 1.0 M HCl. Before getting their materials, students were asked to design an experiment in which they could find the answer to at least one (approved) scientific question. Dr. Merritt worked with students on how to properly word these questions.

Homework: There is no science homework tonight.

Wednesday, April 25th

Today in science: Dr. Merritt collected notebooks at the beginning of class so that he could examine and evaluate students’ work on the three acid/alkali indicator methods. Students were then asked to work on page 181 in their Acids & Alkalis packet. This page asked students to observe and predict the effect(s) of three different variables (concentration, volume, type of acid) on a piece of metal submerged in a test tube filled with acid. In the foreground of this investigation was the notion of a “fair test.”

Homework: There is no science homework tonight.

Tuesday, April 24th

Today in science: H period science class does not meet on Tuesdays.

Homework: —

Monday, April 23rd

Today in science: Using the data from last Thursday and Friday’s acids and alkalis investigations, students were asked to create three ‘keys’ on a single page within their lab notebook. They keys captured the colors seen during their investigations with three different acid/base indicator methods. Key #1, at the top of the page, is a key to the pH color changes expected when using universal indicator paper. Key #2, in the middle of the page, is a key to the pH color changes actually seen when using the cabbage juice indicator. Key #3, at the bottom of the page, is a key to the pH color changes actually seen when using the universal (liquid) indicator.

Homework: Students have been told that the final draft of this letter, which IS NOT DUE UNTIL THE END OF THIS WEEK, will be counted, in Dr. Merritt’s words, as a “take home” test grade. To help them earn maximum points for the expression and accuracy of their ideas, students are encouraged to use both their FOOD FOR PLANTS and POWER PLANT packets to support their writing and revisions.

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