Category Archives: Science Lab

Experiments – An Idea

As homeschoolers, the idea of doing science experiments can be something to look forward to for one person, and something to dread for another. If you are one who dreads experiment day, then I have some encouragement and an idea for you.

The only sound method of teaching science is to afford a due combination of field or laboratory work, with such literary comments and amplifications as the subject affords.” Charlotte Mason, vol 6 pg 223

However, you do not need to do as many experiments when you homeschool using living books as the public school must do, because your students are experiencing the discoveries/experiments as they read living books about scientists. Many of these experiments, we cannot do (because we might die or at least be maimed in some way,) but because of the excellent narratives we read, we experience them on the edge of our seats, none-the-less.

One of my favorite historical science books is Robert Boyle: Founder of Modern Chemistry by Harry Sootin. In this book you are pulling for Boyle as he nearly kills a mouse and then saves it at the last minute, while trying to figure out what air is made of. You let out your breath with a strange mixture of let down and anticipation of a truth being discovered when the mouse does indeed die. There are sketches included within the book showing how Boyle set up his equipment and with the combination of that, and good writing, you have no difficulty “seeing” the whole experiment as it takes place on the page, and in your mind.

I say ‘experience’ advisedly, for the word denotes the process by which children get to know. They experience all the things they hear and read of; these enter into them and are their life; and thus it is that ideas feed the mind in the most literal sense of the word ‘feed.’ Charlotte Mason, vol 6 pg 40

Another reason we should not compare our syllabus to that of the public school is that they rely on textbooks and lectures, two things CM clearly says are sure to “destroy the desire for knowledge”. Hands-on experiments are the only hope for children being schooled this way. But there is also the matter of time. We allot approximately 2.5 hours a week to science, while they allot nearly twice that amount of time. To some degree, they need to do experiments to fill time. It can be a version of busy work.

So, we know that we must do experiments, but we do not need to do as many as the public school requires, which brings me to my idea. (With a little background as to how I came up with this idea.)

I recently attempted an experiment in the book Chemically Active! by Vicki Cobb. I like this book a lot for MS chemistry, and wish they would reprint it…with a few updates.  Here’s an example of why. I came to a section that says, “Set up your apparatus as shown in the drawing.” I must include the drawing here to see if you notice the same thing I did.

Do you see the problem? The test tubes are floating. Since I do not own levitating test tubes, I had to figure out what to do instead. There was also another problem. The book says to “use a carbon rod from inside a flashlight battery”. I didn’t think dismantling a battery was a very safe plan, so I had to look into another option for that as well.

I did a little searching on the internet, and found this excellent video that accomplishes the same thing, but uses a pencil, broken in half and sharpened on all four ends. They then use rubber bands around a plastic tub to prepare a scaffolding for the test tubs. Perfect!

My point in telling you all of this is that there was time involved in preparing for our experiment. We didn’t just break out the experiment “cookbook” and go to work. In fact, rarely can we just go to work, without some kind of prep involved. Even if it is simply making a shopping list a running errands.

It has taken me a long time to get to my idea, but here it is finally: I suggest that you assign your student the job of researching the experiment during your scheduled experiment time the week before you intend to do it. This way when it’s time to actually do the thing, your student is ready. They have the supplies needed, they know what work arounds might be needed, and they are mentally prepared because they have studied it for a period of time. They can accomplish an experiment every two weeks using this plan, which I think is plenty, and the responsibility of the whole thing is on your student, rather than being placed on you. Lastly, I hope this will alleviate the “just forget it!” syndrome which I tend to revert to when I am unprepared for a project.

Happy experimenting!

Related:
To Use the Scientific Method is Natural

To Experiment is Natural

Keeping a Science Notebook

Setting Up Your Science Notebook:

1. Use a 8″ x 10″ sketchbook. I picked up some hard bound black covered ones at Ben Franklin during one of their many 1/2 off sales. We preferred the stitched variety over the spiral bound, and we looked for ones that had a smoother paper rather than rough.

2. Use a light-colored paint pen (if the spine is black) to put your full name and the course on the spine or cover. See #5 first.

3. Put a bit of contact information on the inside front cover. Maybe your name and email address, or phone number.  Just in case…

4. Skip the first page or two. You may want to go back later to add a table of contents and/or a cover page. This is especially true if you keep a separate lab notebook.

5. Number each page in the top outer corner. To facilitate #4.

6. Date each entry. Preferably abbreviating the month, rather than using a number, and using the whole year. (e.g. Sept. 2, 2011)

7. Be neat. I recommend tracing the lines of a piece of binder paper with a sharpie and putting it behind the page you are writing on. You can see through just enough to keep your lines straight.

8. Use ink, not pencils. Draw a thin line through anything you want to cross out, but don’t use correction fluid/tape.

9. Do no tear out pages.

What to Include In Your Science Notebook:

  • Journal of readings (narrations)
  • Record of labs
  • Related picture or sketch
  • Reproductions of worksheets completed
  • Relevant quote or verse

Important Note: I have been told that if you are college bound in a science field, you should keep a separate notebook that is specifically for labs.

What to Information to Include About Your Labs:

  • A title and date
  • Why the experiment was initiated
  • Hypotheses and goals
  • Lab partners
  • List of equipment used
  • Details of products used
  • Record of procedures
  • How procedures were performed
  • Drawings/sketches of experiment set-up
  • Data you collect
  • Daily entries for things you are watching
  • Calculations
  • Outcomes
  • Graphs
  • Mistakes made or problems encountered
  • What would you do differently next time
  • Final thoughts
  • Glue in things like: printed graphs, datasheet templates, photographs, product labels, etc.

**Remember to include units of measurement

Keeping a notebook gives you a forum to talk to yourself, to ask questions, to jot down important thoughts about the experimental design, and how your results might eventually be interpreted.” – Collin Purrington

More information about keeping a lab notebook: 
Collin Purrington – Maintaining a Laboratory Notebook
BenchFly – How to Keep a Lab Notebook
UCLA – Some Tips on Writing Lab Reports