Group+3+Resource+page

Level : Secondary 1 NA / Express Topic : Paper Chromatography

Learning outcomes

Students will be able to: 1. identify and set up appropriate apparatus for paper chromatography. 2. display the proper separation techniques for paper chromatography.

A sample of ink was found near a murder scene. Four suspects were found near the crime scene at the time of the murder. Each suspect carried a pen that contained similar colored ink found at the crime scene. As crime scene investigators, demonstrate how can you nail the culprit?
 * Scenario:**

In order to maintain the integrity of the investigations, all investigators are to record their methods using the digital video recorder provided and submit the recording to the teachers.

1. Students will work in pairs to carry out the experiment for paper chromatography. One student will be doing the experiment while his/her partner will film the process.
 * Possible Work flow**

2. Students will then upload their videos onto their respective group's page on a wikispace set up by the teacher.

3. Different groups will then use the discussion forum found in each group's page to identify good or bad points on the separation techniques.

An example in youtube: media type="youtube" key="-fs5btFKdXA" height="344" width="425"