Summer School – Day 10 – Plants and Invertebrates

I know I keep saying this, but THIS IS ANOTHER OF MY FAVORITE DAYS OF THE SEMESTER! Today was pretty much fun from start to finish. In the morning, lecture on the diversity of plants, including the various adaptations that allowed plants to make the transition from the ocean onto land. After the lecture, I’d arranged for us to have a tour of the Tropical Greenhouse on campus. The greenhouse is across campus from the science building, so along the way I gave them a little walking tour of some of my favorite plants on campus, including a few Ginkgo trees, a Cycad (my all time fave), several ferns, redwood trees, and the Butterfly Garden. Unfortunately, I didn’t get any pictures along the campus tour, but I have loads of pics from our greenhouse tour! We were welcomed to the greenhouse by Kandis, who provides instructional support for the Biology Department, and she is an exceptionally gracious hostess!

To be honest, for most of my time at SSU, I didn’t know we had a tropical greenhouse. It was only when I was teaching this class last summer that I found out about it, but now I want to bring as many students here as possible. It’s not all that big, but there are so many GORGEOUS plants!

Read more

Summer School – Day 9 – Speciation and Pond Water Lab

Today, it was time to leave microevolution behind, and talk about how new species form. Now that they understand how adaptations and natural selection cause populations to change, it’s an easy step to understanding how this can lead to speciation. To drive that concept home, I put together a speciation activity based on this cool online natural selection simulation: http://sepuplhs.org/high/sgi/teachers/evolution_act11_sim.html. 

The simulation tracks populations of birds on an island, to see how natural selection and mutations can cause phenotypic changes. You start with 3 populations of 300 birds each, and follow them through 1,000,000 years of evolution. Throughout this time, the simulation makes a notification any time a mutation takes place, along with the overall effect – was it positive or negative? Did it help to increase, or decrease the population?

Read more

Summer School – Day 8 – Evidence of Evolution

Today we covered sort of a hodge-podge of things, but there was a common thread – ways in which we can see evidence of evolution, both on long time scales, as well as short ones.

First things first, though – Exam #2. Before the exam, we played a game of Pictionary, using the following prompts:

AlleleAnaphase IICharacter vs TraitDirectional Selection
Disruptive SelectionFunction of tRNAsGene FlowGenetic Drift
Haploid CellHomologous ChromosomesIncomplete DominanceIntegumentary System
Metastatic TumorNervous SystemPhases of MitosisProphase I
Recessive PedigreeReplicationTranscriptionTranslation
Read more

Summer School – Day 7 – Darwin and Natural Selection

Started out the day by picking up where I left off on my Darwin lecture, and then moved on to adaptations, and the principles of natural selection. I frame most of this discussion around the Oldfield Mice experiment, partly because it’s a perfect example of a scientific study that demonstrates the effects of selection on populations, but also because the mice are so cute! I end up using these mice as an example all the way through evolution and speciation, so I have a bunch of slides I’ve animated showing all sorts of things happening to the mice. (Selective forces, like being caught by a hawk when the fur doesn’t match the substrate; and, later, random forces, like severe weather).

Oh! I almost forgot to mention that this is the lecture where I reveal probably the single most important biology fact of all . . . the secret connection between Charles Darwin and Abraham Lincoln. It’s common knowledge that they were born on the exact same day (February 12, 1809), but I’ve uncovered a surprising bit of information that is much less well known . . . the image below should make it obvious what I’m talking about (all photos were found on the internet, so obviously they must be completely legit).

Read more

Summer School – Day 6 – Inheritance

This is always one of the favorite topics of the semester – Mendelian genetics, and inheritance. We cover a bunch of really interesting stuff, including questions like:

  • “Can two brown-haired people have a blond baby?”
  • “Why do I have green eyes and my sister has blue eyes?”
  • “Do twins have the exact same DNA?”
  • “What are the genes that determine how you look?”
  • “Can you choose which traits your child will have?”

We also talk about pedigree analysis, and inherited diseases, and Punnett squares (okay, they don’t usually love Punnett squares haha). But still, loads of cool stuff! My lectures on the topic are pretty well set, but I needed to figure out some lab activities. The one activity I use with my lecture-only course is designed as a homework activity, but it was pretty simple to restructure it into a rotation lab. I also found a few additional things for them to do, and explore the subject of inheritance.

Read more

Summer School – Day 5 – Cell Division

Today? The wonders of cell division! In lecture, I framed mitosis in the context of cancer: in order to understand unregulated cell growth, we need to understand how cells operate the rest of the time. As for meiosis, that’s the gateway to understanding reproduction. (Or maybe reproduction is the gateway to understanding meiosis? Either way, they’re intimately connected). This is a pretty important concept in biology, and while I don’t think they’ll need to be able to remember all the little details on into the future, I did want them to have a really clear understanding of what happens during cell division, so we attacked it in a variety of different ways.
 
First: A draw-along. I interrupted lecture, and asked them all to pull out a piece of paper. Then, using Skitch on my computer, I drew out the phases of mitosis, and had them draw along with me.
Read more

Summer School – Day 4 – Anatomy and Physiology

We started out the day with our first exam. Well, really, we started out with a game of Pictionary before the exam, as a way of reviewing the material. Here are the Pictionary terms we used:

ATP and ADPBacterial
Cell
Carbohydrates
Correlation vs
causation
Experimental
control
Golgi
Apparatus
Independent
variable
Inputs of Cellular
Respiration
Inputs of
Photosynthesis
Mitochondria
Osmosis
Phospholipid
bilayer

Plant Cell
Polarity
Potential vs
kinetic energy
Ribosomes

Unfortunately, I didn’t remember to take pictures of their drawings, but I’ve reconstructed a few of them below. Can you figure out which of the terms up above are represented here? (Answers at the bottom of the post)

Read more

Summer School – Day 3 – Energy for Life

Today: Energy for Life (aka Photosynthesis and Cellular Respiration).

Overall, my Summer school strategy is to break up the days as much as possible, alternating lectures with hands-on activities. The schedule is a bit brutal – 9 a.m. to 4 p.m., Monday through Thursday, with an hour break for lunch. I try to never lecture for more than an hour and 15 minutes at a time, and usually a bit less. (Not that my lectures aren’t RIVETING hahahaha, but still . . . ). 😉 It helps keep everyone awake and engaged if I can mix things up a bit.

Read more

Summer School – Day 2 – Chemistry

The theme for today? CHEMISTRY! The morning’s lecture covered the chemistry of water, as well as organic molecules, followed by the WEIRD WATER lab, which was super duper fun! In the afternoon, we had a detergent boat regatta, and then went on a whirlwind “Tour of the Cell,” before which I activate a shrink ray in the classroom. (I have to shrink the entire class at the start of the tour, so we’re small enough to take a submarine ride through a plant cell).

I couldn’t remember quite what we did during last year’s Weird Water lab (Derek and I co-taught the course last summer, and he came up with that activity), so I put together a bunch of new stuff. It was a rotation lab with six stations:

  1. The Structure of Water, where they built water molecules out of gum drops and toothpicks. I especially loved listening to them work out how the molecules should fit together. I had each group make two or three water molecules, and then link them up with those made by the previous groups.
Read more

“Live Blogging” Summer School

I’ve just finished teaching a Summer session of Biological Inquiry – the general education biology course with a lab. I had a small class – just 10 students – and we met on 15 days over the course of 4 weeks. It’s a pretty intense schedule, but I had SO much fun! This was possibly the single best group of students I’ve ever had, in terms of their enthusiasm and engagement with the material.

I wanted to blog about our adventures together, but during the actual Summer term, I just don’t have time – the pace goes too fast during class, and I spend all my evenings preparing course activities. But now that it’s done, I have some free time, and can blog to my heart’s content. What I’m going to do is blog it as if it’s happening now – I’m going to make a blog post for each day of the term, on the same day of the week as it happened originally, with a play-by-play of our daily activities. So, it’ll be like live-blogging (well, sort of), only on a 4-week delay.

Look for the first post in a few minutes. I’ll also be going back to blog some activities from the Spring semester that never managed to get published.