Tuesday, June 30, 2009
Monday, June 29, 2009
- a CD or DVD that can be sacrificed to the project
- the top off of a water bottle, pancake syrup, or dish soap bottle (the kind that you pull up to open, and push down to close)
- a balloon (the bigger the better, but any size will do in a pinch)
- hot glue, or crazy glue
The steps for construction are extremely simple.
Glue the bottle top over the hole of the CD. It is important to make an airtight seal between the CD, and the edge of the bottle top, but do not block the hole in the CD.
After the glue dries, place the balloon on the bottle top, covering the entire thing.
With the bottle top open, blow up the balloon by blowing through the CD. When the balloon is full of air, close the bottle top (this can be a little tricky, but it is possible). Place the hovercraft on a smooth surface, and open the bottle top.
A little push demonstrates Newton's first law of motion (see www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l1a.html for a kid friendly explanation of Newton's laws, or have them watch The Magic School Bus Plays Ball on http://www.veoh.com/).
It's great to be a homeschooler.
Sunday, June 28, 2009
Traveler's Rest just east of Lolo, Mt is the only archaeologically verified campsite of the Corp of Discovery along the entire 8,000 miles of the trail. Once, a month throughout the summer and fall, they hold "Discover the Seasons" events at the site. Yesterday's event highlighted the food of the trail, and of the local indians through the years.
We weren't sure what to expect when we saw the visitor center, a yurt in the middle of what appears to be an unused field at the edge of the highway, and nearby huddle of makeshift tents and tepees, that made up the event. However, the volunteers manning the tents were friendly, knowledgeable, and generous with their time, and samples of food, and fun.
We were treated to a fire making demonstration, using flint found in the Philipsburg area, with cottonwood fluff for tender (cottonwood is highly incendiary - making for a good show). Then we were given a sampling of dried fruits and meats, hardtack, salt pork, and some very interesting wild wheat and berry cookies. There was a flintlock demonstration, and each of the children received a deerskin bracelet, braided with a mystery braid, while they watched.
Saturday, June 27, 2009
Or, scrap the project entirely, and settle in for a nice game of Whist. Keep the cut up pop can though, it makes a really good object lesson for figuring the surface area of a cylinder.
Friday, June 26, 2009
We let the air out of the balloon, cut it open, and attempted to stretch it out into a rectangle. The effect was good, but as you can see from the pictures, we used a washable marker that didn't dry on the surface of the balloon, so things got a little messy.
Thursday, June 25, 2009
When you hold the map up to a window, the population centers shine like cities at night. Obviously, the more large cities you include the better the effect will be.
Wednesday, June 24, 2009
Again, you can find worksheets to go with these words at www.lessontutor.com/ees80printPT1.html.
Take a moment to discuss world time zones. There is an excellent, kid friendly, site for this at www.time-for-time.com/zonesworld.htm.