April 2015 archive

Grade 8 coordination biology

We have been looking at muscles and movement. Here is a copy of the textbook part that goes with this unit. (You should have a paper copy also).

Now that you can describe how muscles work and joints and bones function in your body, we need to look at the systems that control your movement : the nervous system.

Find out a bit about the brain and your nervous system here at KidsHealth or here at this revision site.

See the brainpop videos on the nervous system. (Nervous system, spinal cord, neurons)

Don’t forget to practice  your juggling regularly and keep track in your notebook.

We are going to do an experiment on coordination, reflexes and response times. We will collect common data and then you will choose the appropriate data for your experiment.

HERE IS A STUDY AID for your upcoming test on this unit.

You have one other task in this topic – to explain clearly a factor about the brain and learning that would be useful for a grade 8 student.

Grade 9 Kinetics and Energetics unit

We have looked at a video on collision theory and some examples of how to monitor reactions. The simulation to investigate reaction rates also allows you to picture what is happening at a molecular level.

You may wish to read the section on kinetics in your text book as well.  In particular I would recommend section 8.05 for explaining collision theory.

Here is your assessment task on kinetics: you need to design and do an experiment to look at a factor that affects reaction rates. You should complete collecting data for this on Thursday April 16th. You should complete the report Monday during class and hand it in before class on Thursday April 23.

Finished your experiment? Kinetics review questions are here. I also recommend the questions in the section on kinetics in the text book as well. (link)

You have a cumulative test coming soon. If you would like to get started on review (who wouldn’t?), a study guide is here.

Welcome to spring and Acid and Bases

Here is the syllabus for this topic, with links embedded.

Simulations :

1. testing for pH here

2. Comparing acid and base solutions here (and you can look at the molecular level)

3. Look at the effect of changing concentration

4. the pH scale here

For Thursday April 16 and Friday April 17

Some people on THursday need to finish their titration with their standard. If this is you, the stuff (indicator, acid, etc) is on the far counter under the windows by the distilled water. Then calculate the actual concentration of the acid (marked approx 0.1 M HCl.) Please be careful and also clean up after yourself. 🙂

Please catch up with this topic. If you never did check out the simulations above, do so. Look at chapter 8 and take some notes (hint: ‘answer’ the points from the syllabus guide) and pay attention to the definitions. On the syllabus guide document I included some video links and other sites to go along with the textbook. Check them out.

I asked you to try questions marked in pink on the right column of the syllabus guide — finish them. Check the answers. Then if you have more time, feel free to try any of the other sets of questions in the right hand column, next to any of the sections of chapter 8 topics.

April 20/21

Old Video on pH and another slightly more modern video on acids and bases