Conclusion and Evaluation Aspect 3

By Thursday, November 11, 2010 , , , , 0

  Today we look at the last IA criteria - Conclusion and Evaluation (CEv), aspect 3. Recall that for CEv, apsect 2, the exerimental method is critically evaluated. For aspect 3, realistic improvements must be stated. Students should aim to improve every fault in the method that they evaluated for CEv aspect 2. The improvements should be realistic and straightforward. If they cannot realistically (easily) make an improvement they should clearly state this fact. Sometimes, it helps students if the present CEv aspect 2 ...

Conclusion and Evaluation, Aspect 2

  Today we will consider Conclusion and Evaluation (CEv), aspect 2. This aspect deals with the students thoroughly investigating the experimental method. What didn't work well and why? What happened to make the quality of the results not as good as what they should have been? The reasons should relate to the direction of the calculated value with respect to the data book value. For example, if a rate of reaction is less than expected, it would be no good saying that as ...

Conclusion and Evaluation – aspect 1

  The theme for the next couple of days will be Conclusion and Evaluation (CEv). Aspect one is split into three parts and is, in my opinion, the hardest of all of the aspect to achieve a 'c' in. Firstly, the student needs to write a good IB level conclusion - what do the results actually mean. There is no longer a 'hypothesis' to write, so this is the part of IA that is really testing an understanding of chemical knowledge. Secondly, the student ...

An Overview of Internal Assessment (IA)

  Today's posting will cover an overview of IA: IA counts towards 25% of the final Chemistry grade. HL students need to carry out a minimum of 60 hours of lab work, SL students need to carry out a minimum of 40 hours. There is a Group 4 project that counts towards 10 hours of lab time (more on this is later postings). Teachers assess the students on five skll areas: Design (D) Data Collection and Processing (DCP) Conclusion and Evaluation (CEv) Manipulative Skills (MS) ...

Calculating a value for Absolute Zero

By Thursday, April 8, 2010 , , , , 0

This a nice, simple IA lab that is worth trying out. In a nutshell, the basic procedure is as follows: Fill a gas syringe with a single gas (Oxygen or Helium are good)   Cool the gas (at least five times), measuring the volume each time. Plot a graph of temperature (x-axis) vs volume (y -axis) and extrapolate This is just the basic outline for the method - if you need more details let me know. Not sure I would use it for Design ...