The Low investment activity bit meant that it doesn't cost much to do.
Look up some beekeeping suppliers - the biggest one is Th0rnes, then there's Ma1semore and also Southdown bee farms. Once you've got a hive it needs frames for the bees to live on, and several thousand bees.
Somebody on here paid almost £250 for a nucleus colony - five frames, which will take a while to grow to fill a full brood box. Can get them cheaper, but not many newcomers look further than the 'biggest' suppliers. Swarms are cheap, but this year are in quite short supply. A queen can cost anything from about £25 to several hundreds (from a breeder that can produce the individual bee's pedigree - look up Danish Buckfast Queens)
If honey is taken off it needs to be got out of the comb - people share extractors and sometimes honey warmers, but there are new jars, lids and labels to buy.
If honey has been taken the bees will need feeding, so they have enough food to last the winter - quite a few pounds of sugar per colony. (look up 'winter feeding')
Then there's clothing, other bits and pieces of equipment, spare hives, more stuff and eventually a new shed to keep it all in!
Some people do make their own hives - they're lucky to have the skills, and the tools. The cheapest is possibly a top bar hive, but if I wanted one I'd have to get somebody to make it for me because I can't saw wood in a straight line!
I suppose, though, that beekeeping might be a cheaper hobby than photography.
Once you start reading round the subject you'll find it's huge - and I think you're going to be really pushed to limit your presentation to only 3 slides. Take a look at the index on Dave Cushman's site
http://www.dave-cushman.net/bee/textlinks.html for an idea of how much there is to know - and he, sadly, hadn't finished his site when he died.
Good luck.
Please let us know how you get on.