G7 Week 07

Last week in science!

Monday, October 19th

Today in science: After collecting this past weekend’s homework, Dr. M gave each student a 2-page, 4-sided Seed Anatomy Resource (handout). This handout was used during the first phase of the Chestnut Dissection (Castanea sativa), which students were asked to enter as a new investigation in their Lab Notebooks.  After writing some simple/basic background information about their indoor chestnut*, and with the help of a ruler to make precise size measurements, students were asked to create four life-sized (“to scale”) drawings of their chestnut: Top view, Bottom view, Side 1 (or A), Side 2 (or B). Dr. M also asked students to label the drawings with terms taken from the new Seed Anatomy Resource.

*This is the background information students wrote in their Lab Notebooks (under their title) before making their four drawings: “My specimen has been kept indoors for approximately 13 days. It was taken from the grounds of the TASIS campus. Today’s indoor temperature is 20-21 degrees C.”

Homework: The first phase of the multi-part Seed Collection project is due tomorrow. Students should come to class with all of their (prepared, i.e., cleaned and dried) specimens contained within some sort of container (e.g., plastic bags, paper envelopes, etc.).

Tuesday, October 20th

Today in science: Students were asked to “process” their seed collections today. This processing consisted of 4 stages: 1) putting each seed type (or kind) into a separate bag or envelope, 2) creating identification labels–from green cards provided by Dr. M–to put into each seed type bag/envelope*, 3) labelling the outside of the bag/envelope with the same identification information as on the green ID cards, and 4) putting all labelled seed bags into one large–and labelled–plastic bag provided by Dr. M.**

* Card and small bag/envelope information included Student Name, Date (2020-10), Seed Type (if known), Location/source (if seed type is not known)

** Big bag identification information included Student Name, Date (2020-10), Class period

With the remaining time in C period, Dr. M asked students to resume their indoor chestnut seed dissection by instruction them to use the tools in their dissection kits to remove the outer shell of the chestnut so as to expose the nut covered by inner skin. If/when successful, Dr. M asked students to photograph the results of this stage of their dissection.

With the remaining time in H period, Dr. M asked students to enter their collections in their Lab Notebook in the form of a Seed Collection Log.

Homework: There is no science homework tonight.

Wednesday, October 21st

Today in science: In C period, Dr. M asked students to enter their collections in their Lab Notebook in the form of a Seed Collection Log. When finished, after receiving an explanation of the instruments contained within their dissection kits, students were asked to resume their chestnut dissections (see above).

In H period, Dr. M asked students to resume their indoor chestnut seed dissection by instruction them to use the tools in their dissection kits to remove the inner skin of the chestnut so as to expose the ‘raw’ nut itself. Students were asked to make 8 total drawings of the different stages of their dissection: 1) nut completely contained within the outer shell (top view, bottom view, 2 side views), and 2) nut covered by outer skin but with the outer shell removed (top view, bottom view, 2 side views).

Homework: There is no science homework tonight.

Thursday, October 22nd

Today in science: In both C & H period, Dr. M asked students to resume their indoor chestnut seed dissection by instruction them to use the tools in their dissection kits to remove the inner skin of the chestnut so as to expose the ‘raw’ nut itself. In some instances, Dr. M asked students to collect additional specimens from the TASIS campus to gain more experience using the dissection techniques. Throughout this dissection investigation, students were asked to make 12 total (labelled!) drawings of the different stages of their dissection in their Lab Notebook:

1) Nut completely contained within the outer shell (top view, bottom view, 2 side views),

2) Nut covered by outer skin but with the outer shell removed (top view, bottom view, 2 side views), and

3) Nut with outer skin completely removed (top view, bottom view, 2 side views).

Homework: There is no science homework tonight.

Friday, October 23rd

Today in science: In both C & H period, Dr. M asked students not only to resume their indoor chestnut seed dissection (see above), but also to work on a second chestnut dissection (this time of an outdoor chestnut). In this next stage of the Chestnut Dissection investigation, students were asked to dissect the chestnut using exactly the same method as used with their indoor chestnut, but this time to take 12 photographs of the different stages of their dissection. Afterwards, students have been asked to put the photographs into three 2 x 4 tables their digital Lab Notebook. The photos should include:

1) Nut completely contained within the outer shell (top view, bottom view, 2 side views),

2) Nut covered by outer skin but with the outer shell removed (top view, bottom view, 2 side views), and

3) Nut with outer skin completely removed (top view, bottom view, 2 side views).

Homework: There is no science homework this weekend.