Physics 4-12-19 Wave Interactions

PHYSICS: Cool thing, standing waves! How’d you like making waves with slinkies? Are you okay with constructive and destructive interference?

Here’s the slinky activity for today. Stretch the slinky a pretty good length between you and your partner, but not enough to overstretch the slinky. Below that, the discussion of wave interactions.

Physics 3-22-16 Wave Interactions from Tammy Skinner on Vimeo.

flickr photo by EfrankE

Hon Chemistry 4-12-19 Single Replacement Reactions & the Activity Series

HON CHEMISTRY: Moving right along with the 17 types of chemical reactions, here are the single replacement reactions – and you also got a head start on the activity series!

This makes 15 reactions so far, and we’ll do the rest on Monday. Careful though, memorize, but don’t just memorize them. Make sure you can apply them as well. When you start to work any equation, first determine what type of reaction it is, then figure out what rule applies and follow it to determine the products. I believe in you! You can do it!!


flickr photo by bobtravis

Physics 4-11-19 Waves

PHYSICS: Hey guys! Here’s our discussion on the properties of waves. Remember anything from your earlier 8th grade physical science days? Problems are pretty simple for you, I think. Do you remember the main formula from chemistry? Speed = wavelength x frequency (c = Ξ»f).

Easy peasy – and don’t forget the applications!

Chemistry 4-10-19 Polyatomic Ions & Molecular Geometry

CHEMISTRY: Great job with polyatomic ions and molecular geometry today! Who knew we’d be doing geometry in chemistry?!?

For tomorrow, be sure and print and read the cLAB: 3D Molecules! Advice for Lewis structures – don’t forget to count the electrons! And then double check the number of electrons. And when you think it’s right, count the electrons!! πŸ™‚

Advice for molecular geometry? Make sure you know how to draw Lewis structures, then determine the type of ABE structure and you’ve got it. Easy-peazy!

Lost Inside the Mponeng

Welcome to a great adventure! You’ve learned so much this year – not just concepts, but skills, and I can’t wait to see how you are going to apply it all!

Here’s the place where you can post your questions about the Lost Inside the Mponeng project so that everyone can see the answers.

First answer – the due date is Tuesday, April 30.

A really useful hint? Go back and re-read the project again – this time with a highlighter. It’s amazing how much I miss the first time I read something. So what’s your next question? πŸ™‚


Image source Africa InTouch News

Chemistry 4-9-19 Resonance

CHEMISTRY: Wow! Lewis structures, multiple bonds, and now resonance!

HW UPDATE: Homework that was scheduled for tonight has been moved to Thursday – due Friday. Thursday night’s scheduled homework is moved to Friday – due Monday.

Here’s some good advice – don’t take shortcuts. Learn the proper steps on the easier molecules, and you’ll be able to do the hard ones. And if it’s still all Greek to you, don’t worry! Keep practicing and you’ll get it, I promise!! Don’t forget to count electrons and don’t forget CONS!

Physics 4-8-19 Simple Harmonic Motion

PHYSICS: Springs and pendulums, back and forth… back and forth. Here’s the lecture from today on simple harmonic motion.

Wonder how it could be used to solve a design challenge? πŸ™‚

UPDATE: Below the lesson vodcast is our short look at that spring problem πŸ™‚


flickr photo by sudip