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How to write an IB Biology Lab Report – Design

they waiting over the basics of a lab report for IB biology and I’m gonna do this fairly quickly moving between this document with some tips and an actual sample write up okay so you can pause it and take a look in more detail at these various parts but first of all in the beginning let’s just talk about this focus on the design aspects so this is the planning stage and I’d be provide you with we main categories for the design aspect in the future this may change but for now let’s focus on these first three and what is required to get complete and I have some extra notes down here and a few things to help make sure you don’t miss okay based on some of these criteria now one of the things that you’re gonna notice immediately is that if you just look at these three categories complete partial and not at all this is what we’ve provided ourselves but the IV provides everything that’s here and it’s very vague and all kinds of liability workshops this is one common thing that everybody always talks about it’s not exactly clear and I think they deliberately kept it gray so that there can be a lot of flexibility but then that makes it very difficult for staying consistent and moderation but here are the tips that we picked up over the years so the first thing I’m getting you find the problem and select the variables pretty clear I think but just make sure that your aim is there your aim should include the independent and the dependent variable in there it’s certainly not a bad idea to throw in the units in a mazwell in parentheses overall the controlled variables you need to make sure they’re enough controlled variables but I’ll talk about that throughout the rest of this and you have to make sure your variables are quantitatively described and so I’ve suggested that you use something I’ve given a document that looks like this it’s kind of a a planning packet if you will and the aim follow this format hypothesis will come I’ll discuss that in a second and organizing the variables into a table like this with the independent variable written here dependent variable and a list of all the controlled variables and at the right here you’ll discuss your fair testing so how are you going to be manipulating your independent variable how are you manipulating your dependent variable why are you interested in them fill that out and this is most important for each of the control variables and you can see in this example over here which of the control variables make sure you list it give the actual unit and then talk about how you are going to keep that controlled and why it’s necessary to keep that control so you can see in this Daphnia experiment there are several you should be aiming for at least five controlled variables I think it to be safe don’t forget the units of course as well okay anything else left to be underneath here do the table as I’ve just shown you the table that’s provided in the sample template include all relevant units avoid the word amount use things like volume mass the number of don’t say amount concentration can be expressed in grams per milliliter parts per million there’s various other ways that’s not concentration just make sure you have your units correct at least three control variables I’m updating that to five percentage and make sure everything is quantitative as well in the next category basically if you went through and did this table as I have suggested in detail then that should actually take care of this category designs a method for the effective control of variables because by talking about the fair testing in the how and the why columns here you know automatically going to be thinking about that and then when you write your actual your method as well you can it’ll be easier because you’ve already listed some of those things out so in your method you should try to include some of those specific things to control as well too this is a little bit short and lack of detail but from what I’ve noticed this more than makes up for the lack of detail on the method so keep that in mind you must explain how though this is all typically if you fill out the table in detail I think you should be okay here yeah anything else here don’t mention it don’t just for the why you want to control something don’t just say because it will affect my experiment and repeat that over and over again if you need to keep the light intensity constant why is that necessary talk about how changing the light intensity what effect would light intensity changing light intensity actually have on your experiment obviously if you’re doing a photosynthesis experiment and you’re trying to investigate carbon dioxide concentration obviously keeping the light intensity constant would be very important if you don’t well we all know that light is another factor that influences photosynthesis so talk about that if you could get into detail about how the light would affect that experiment and find out the last one develops a method that allows for the collection of sufficient relevant data honestly when I take a look at the data table that gives me a really good idea if this is actually happened here so what do we want to say if you don’t connect it up conduct enough trials and that’s gonna be written that’s gonna make it very difficult for you to analyze the experiment and it’s gonna make it almost impossible for you to do any kind of statistical analysis just calculating an average is not enough in my opinion and for most of the feedback that I’ve heard biology teachers as well but we’ll discuss that more in the data analysis sectional for now if you don’t have enough data to do any data analysis then perhaps you haven’t collected enough relevant data sufficient relevant data this means as the data you’re collecting actually addressing your hypothesis and your aim and your variables so be careful about that and watch out for appropriate data ranges if you’re investigating temperature effects on enzymes then is your are your temperature ranges large enough to actually you know what are we interested about in enzymes we’re also interested in what happens after we get to the good naturing range of temperatures so if you’re and if you’re talking about denaturing but you’ve only investigated a range of temperatures up to maybe 35 or 40 degrees maybe that’s not a large enough range so be careful about that as well what else to say here enough trials 5 5 5 let me add in here 5 by 5 here a lot of people a 5 by 5 what does that mean if that means 5 different readings 5 from reading so 5 different temperatures if you’re investigating and 5 repeats of each of those temperatures and so you’ll actually get quite a bit of data to be you’ll be able to at least do some kind of line graph or analysis of that and if you if you have 5 repeated trials for each of those then you could take a couple of those and analyze them to see if there’s a significant difference between them using a t-test or some other type of analysis analytical method are you really measuring the correct variable correct range of data can talked about that already the key point here is if you don’t do any trials you can’t even calculate an average if you can’t have been an average then you won’t be able to actually do any sufficient statistical analysis and that’s automatically gonna mess you up here and in the next section as well – all right if you have any questions please post them alright thank you

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