07/06/11 6B Edexcel Alternative to practicals

Anyone else doing it?

How are you preparing for it?

Yeah doing the same.
do you have notes on the core practicals? and thier prepartion?

Sparkle 92 thnx!! 4 the mitosis!

but besyds dat dont we use ethanol/alcohol sumwhere if yes 4 wat? i knw HCL is 4 softening but wat is alcohol 4?

The mark and recapture method can be used. You can visit the area and capture the animals using nets or whatever then place a tag on them and release them unharmed. Then on the second visit, you capture the animals again and count the number of them with a tag. The estimate of the population size is given by the equation: (Total number of animals captured and marked on the first visit) x (Total number captured on the second visit)/ Number of animals captured in the first visit who were recaptured in the second.

Hey Rizam, no one here seems willing to be discussing Q3, and I can't stay for long, but here's a tip. Go over the latest past paper, starting with the sample assessment stuff. Read the question, try to understand it, then read the markscheme points. ofcourse you'll have to develop these points into a well-developed paragraph to earn full marks. As you solve the past papers you'll notice they are all the same: suggest a method, describe it in detail, write variables and those to be determined, control, etc... and so memorize the outline and you'll be good
Goodluck!

Quote if you post to me!

good luck math grim reaper and all of u...c u all tomorrow after exam!!

HELP NEEDED!!
IN question 2 in the sample assessment paper, we had to draw the bar chart for the mean heart rate for regular and non-regular caffeine drinkers... Now we had to represent range for the regular caffeine drinkers... any idea how to draw the range bar??

I think it's like an error bar.

Bar chart has a value of 5 for example. It's a mean that was calculated by adding together: (4+5+6)/3 then on your bar you make this sign ---> I where the upper horizontal line is on 6 and the lower one is on 4. It shows you the range of values from where the mean was calculated. You'll have to make two separate ones for both the bars to indicate the range for both.

I'm not a 100% sure if it's the same thing but I was just group studying right now and everybody agreed it's probably this :P

Please quote me if you know I'm right/wrong for sure

Hi guys... Did we decide on best way to dispose of brine shrimps? I have a feeling it will cone up as q1. Thanks

this is so awesomeee. thankkks!

Does anyone have the Jan 2011 pastpaper and marking scheme for 6B?
I've looked everywhere on the internet and cant seem to find it :/

can anyone tell me why for the root tip squash we use the root of garlics? why the root? also what is the ascorbic acid used for because I know that the hydrochloric acid is used to soften the cell wall but have no idea about the ascorbic acid :s

here u go

i was a little bit shocked actually.

i messed up at the easiest question

thank goodness it was easy

Which Q?
yea and wht'd yu write for the last Q?

what a great question ?!
ANSWER PEOPLE!

Which paper is this? 6CH08 I'm guessing? If so count me in!

Hii

time to concentrate on this now.

i am giving chemistry unit 8 too.

whn will we start our discussion

Unit 6, you mean?

whn do we start discussing?????????????

Yeah agreed
when shall we fix the revision date?