Magnolia Homeschool






         Sharing our learning experiences!

April 21, 2011

Chocolate Study

Filed under: Science and MathEngimama @ 6:59 am

A couple of months ago my daughter and I attended an American Chemical Society lecture about chocolate and learned that the only chocolate plantation in the U.S. is in Kona, Hawaii.  We would have loved to tour it while we were there, but they only offer a few tours a week and we couldn’t make those.  However, we still wanted to see the cacao trees so we drove up to the plantation.  “On the Kona Coast, cocoa is grown, handpicked, sun dried and processed by cacao growers who adhere to the highest standards of excellence.  The cocoa is then sent to The Original Hawaiian Chocolate Factory and made into pure Hawaiian chocolate.”  The company was founded in 1991.  They have six-acres of cacao trees and six employees.  I had hoped to see the big cacao pods on the trees but we couldn’t see any from the road.  Back in Alabama I checked out their website and ordered a DVD of the tour.

Now, once again, I have had to make huge sacrifices in order to ensure that my children are properly educated – we needed to take our chocolate study further.  It was time for taste testing!  What do cacao nibs taste like?  How does the percentage of cacao content affect the taste?  Does the criollo cacao bean really make the best chocolate?  Does single-source chocolate taste better than standard chocolate from mixed beans?  How do different brands and different added flavors compare?  These were the questions we needed answered – for the sake of the children’s education.  Along with the tour DVD, I ordered roasted cacao nibs, milk chocolate, dark chocolate, and criollo dark chocolate from the Original Hawaiian Chocolate Company.  We also got a wide variety of chocolate bars from the grocery store.  These included extra dark, white, and flavors such as ginger, sea salt, coconut, chili, and even bacon!  We studied hard; until we were too full to continue.  I could tell you the answers that we discovered to all of the above questions, but don’t you think it’s better to do your own research?!  I will say that I thought the cacao nibs tasted awful.

April 18, 2011

Peeps Science

Filed under: Science and MathEngimama @ 7:27 am

Last year around Easter we made some incredible contributions to the world of Peeps science!  (Warning: Many Peeps were harmed in the course of these experiments.)  We cooked them in the microwave (they quadruple in size due to the heated/expanding air bubbles in the sugary treats); we attempted to dissolve them (they will dissolve in boiling water but not in room temperature water or in acetone); and we hammered them (at room temperature they just get squished; after having been in the freezer they just get a little more squished; apparently you have to put them in liquid nitrogen to have them shatter upon impact).  We also read about how they are made.  We learned that “marshmallows” are no longer made from the mallow plant that grows in wild marshes (which the ancient Egyptians used to make a gooey treat reserved for gods and royalty).  The first modern marshmallows were made in France in the 1800’s.  In the early 1900’s the mallow root extract was replaced by egg whites or gelatin (which binds large amounts of water into the marshmallow).  Gelatin is made from animal bones or fish skins.  Fish-derived gelatin is mainly used in the pharmaceutical industry but rarely in food because it is expensive.  (Thus, my son learned that he was swallowing fish skin every day in the form of the gelatin capsules we put his medicines in!)   We also learned about polymers while dissolving Styrofoam in acetone.  Learn more about Peeps at this tongue-in-cheek Peep Research website.

April 15, 2011

Earth Day Celebrations

Filed under: Science and MathEngimama @ 7:24 am

April 22nd is Earth Day, which is intended to “inspire awareness and appreciation for the Earth’s natural environment.”  Events (on various dates around the 22nd) are held in most communities.  We have a great one held at a local nature preserve.  I can usually convince at least one of my kids to go on any particular outing with me, and a few years ago my son said “yes” to this one with the enticement of a reptile show and a chance to see a live black bear cub up close. 

I was ready for the standard “doom and gloom” environmental preaching but there was very little of that at this event.  The first Earth Day was held in 1970; at that time environmentalists were issuing dire warnings about mass starvation, overpopulation, and global cooling!  Obviously they were wrong, and there have been all kinds of environmental improvements since then: carbon monoxide emissions in the U.S. are down 55%, particulate 80%, sulfur dioxide 50%, and lead emissions 98%, despite a doubling of the number of cars and a tripling of the number of miles driven (per the Index of Leading Environmental Indicators, published each year by the Pacific Research Institute and the American Enterprise Institute).  We have cleaner air, water, and land; game fish have returned to countless American streams and lakes; and the Northeast has more forestland than at any time since the 1800’s.  So, we can certainly celebrate!  And allowing children to enjoy the natural world is sure to encourage an appreciation of it.

We started the day with a reptile show.  We learned about (and later touched) many species of non-venomous snakes, as well as some lizards and turtles.  Then we explored the exhibitor booth area where my son pasted together a picture puzzle (an x-ray of a bat); touched lots of animal hides; sorted through mastodon teeth, raptor claws, saber tooth tiger teeth and other “fossils” (all replicas); tried out a tree height measuring tool, a tree canopy density measuring tool, and regular old compasses; and he got a neat-looking free CDROM about Alabama flora and fauna from the Nature Conservancy.  At a wildlife rehabilitation group’s booth we got to touch a baby squirrel, possum, and black fox.  Next we went to a program on rare and endangered mammals with Dr. Robert Bloome of the Alabama Zoological Park.  He brought several baby animals with him: the black bear cub, a rainforest monkey, and a tiny wallaby.  Not only did my son get to see the bear cub, but he also got to hold it!  

After buying lunch from a 4-H group, we went on a hike guided by two women who have PhDs in forestry and who work in the research branch of the forest service (USDA Forest Service, Southern Research Station) at Alabama A&M University.  We learned about the different indigenous trees and “invasive exotics,” forest management, tree diseases and bug problems, and how to tell leaves from leaflets.  We also learned that the American Indians in this area used to burn the forests to clear the land for farming.  There were only three other people on the hike with us and since my son loves to talk, the whole group was soon aware of his love for snakes, lizards, spiders, and all things creepy crawly.  The guide told him that Alabama ranks fifth among the states in having the most species of herpafauna (creepy crawlies) – lucky us!

April 14, 2011

Beyond Driver’s Ed

Filed under: Home Ec/Life Skills/ShopEngimama @ 12:21 pm

My daughter and I spent two days in Birmingham last week for a “New Driver Car Control Clinic.”  This is “hands-on, in-car training that consists of a 120-minute discussion of vehicle dynamics and human dynamics followed by four hours of in-car instruction in accident avoidance and defensive driving maneuvers.”  The program requires parental participation (parents are the “coaches”).  We met at the empty food court of an outlet mall on a Friday evening for the classroom portion.  The instructor talked and we watched a video about horrible things that have happened to young drivers and how they can be avoided (such as what to do if your wheel drops off the pavement).  “We begin with an understanding of the psychology and physics of crashes, vehicle dynamics, human responses and the likely outcomes of failure.”  We also received a 56-page workbook, New Driver Car Control: From Kamikaze to Competent, and a 45-minute DVD detailing all the in-car exercises so we can practice them on our own (which is a necessary part of getting this training to become automatic).  The next afternoon we met in the parking lot at the outlet mall for the in-car training session.  There were only four student-parent teams in our session (usually they have 10) so we got to do more repetitions of each exercise than they normally do.  Between exercises we all got out of our cars for more explanations and instructions.  Each team was given a two-way radio, but they were only for one-way use.  #1 rule: only the instructor is allowed to talk on the radio.  He talked each driver through the exercise and we could all hear his comments about their performance.  He teased people for hitting cones or missing targets, but it was in a fun way and he was making the kids feel comfortable about making mistakes while they were learning.  He told everyone ahead of time that they would not be perfect!  My daughter was much better than me at understanding what she was supposed to be doing on the various courses.  As the coach, my job was mainly to observe and keep quiet!  We were car #4 so we got to see all the other cars do each exercise first.  Each one starts with putting the car in the “starting gate” which was marked by two cones.  You have to get the center of the wheels lined up with the cones, even though you can’t see them when you get close.  The instructor showed each driver what to look for on the outside of their car (we used our own cars) to be able to line up with the cones. 

We started out with a very slow exercise, the “roll-on roll-off slalom.”  This was just weaving between a straight line series of cones and trying to stay close to the cones.  The object was to develop sensitivity to speed and distance, develop smoothness in managing the accelerator and steering wheel, and just to become comfortable.  On one one-through the drivers held the radio up to their ear like a cell phone; they all found out how difficult it is to maneuver the car while on the phone. 

Next we did “threading the needle.”  This exercise helps develop precision steering (most driving uses very little turning of the steering wheel – a 90 degree turn only takes one half of a turn on the steering wheel), teaches how to get the car in the right place every time you enter a tight space (they learn that you have to turn a little to the right before making the left turn, and vice versa, into a tight space), instills a knowledge of the car’s turning radius, and develops speed control in turning.  The instructor explained where they need to be looking during each part of each turn and when to start each turn in order to avoid having a back wheel hit a cone.  They also learned to fight the tendency to use the gas as soon as they start to steer – they have to brake and steer at the same time (which comes into play during emergency stopping).  He also talked to us about the lock-to-lock steering mechanism on our cars.  At the end of each run-through during the first two exercises the drivers stopped the car and lined up with a cone, just like they did in the starting gate. 

So, I felt pretty comfortable at this point and was thinking this isn’t so bad…then we did the “threshold braking” exercise.  The instructor talked about ABS brakes and explained how they work and how the pedal feels in an emergency stop.  All the cars had ABS so we did not learn about “pumping the brakes.”  The purpose of this exercise was to experience using maximum braking force, preprogram the subconscious for emergency braking, and exercise visual skills in judging stopping distances.  We left the starting gate and got up to 20-25 mph (this sounds slow but when you are in a parking lot headed for people and cones it feels very fast!!).  We were supposed to stop somewhere before a box of cones, but we were not concerned with the exact spot in this part of the exercise.  The first time through, people tended to be timid – stopping way too soon, not getting up to speed, or stopping in several increments.  My daughter had no trouble speeding up and slamming on those brakes, but she did stop way before the box – the instructor was impressed with how fast she stopped our minivan!  Even with ABS, everyone left rubber on the black top.  After each car stopped short, the instructor had them start from that position and continue forward until he gave the signal to stop.  The parking lot ended at a 20-ft drop-off not far beyond there and I was terrified!  It didn’t bother my daughter, in fact she enjoyed this!  On the way back to the starting box we then did the same thing but tried to stop inside a box of cones.  It took many times before anyone ended up in the box after slamming on the brakes.  Whenever someone did stop in the box the instructor had everyone honk their horns for them.  Next, the instructor pulled his van over to the braking area and watered down the pavement.  Now we did the exercise on wet pavement and saw how much more distance it took to stop the car.  I was very worried about trying to stop on wet pavement with that 20-ft drop-off not far away, but my daughter pounded those brakes and the ABS system worked great.  She said she liked the bumping feeling in the pedal (the valves in the system opening and closing).  A local Birmingham TV news cameraman showed up about this time and filmed for a while.  The Car Control Clinic is based in Cincinnati (and the instructor had driven down from there) but they hold clinics all over the U.S. and they are trying to get the word out about their company.

The next exercise was so terrifying that I had to close my eyes each time.  Two of the mothers got out of their cars and had their kids do it alone.  My daughter told me she would hold it against me for the rest of my life if I got out of the car!  “Stop-in-a-box” is similar to the previous exercise except now there was a short lane of cones and a rectangle of cones at the end of the straight-of-way that represented a semi truck blocking the road and cars on either side of the road.  We blasted down the straight-of-way at 20 mph (I’m serious – it feels like 70 mph)!  The instructor was standing at the end of the box.  As we entered the lane of cones he suddenly signaled either left or right.  The idea was to slam on the brakes but wait until passing the two cars on the sides before cranking the steering wheel until it locks (while still braking) and land within the rectangle without hitting any cones.  Only one of the drivers accomplished this during about four tries each (he got to get out of his car and accept the accolades of the rest of the class!).  Your hands have to move very fast to get that steering wheel cranked all the way to the locked position (no crossing over – that’s big trouble with the airbag).  You knew you did well with the steering if your steering wheel was locked when you came to a stop.  I just couldn’t stand watching us baring down on the instructor and waiting for him to make the turning signal (you are not supposed to take your foot off the gas until you see his signal).  I just knew, each time, that we were going to hit him before he made the signal!  After the first time I just closed my eyes and then it wasn’t nearly as bad.  The braking and turning weren’t too scary after the first time either.  After my daughter’s first attempt the instructor told her to concentrate on moving her hands faster.  On the next round I had my eyes closed but as we were turning I knew something didn’t feel right; we kept turning too long.  It turned out that she was concentrating so hard on her hands that she forgot the brakes at first!!  The next time around she did great though.  After sideswiping the “semi truck” a couple of times she got to the point where she just hit a couple of “rose bushes” on the side of the road – “$19.95 at Home Depot!”  Eventually the instructor said the kids had all done well enough to survive this emergency and it was now the parents’ turn to try it.  I seriously thought he was kidding, but he was not!  We each did it twice.  I just could not keep my foot on the gas until he gave the signal so I started to slow, and I sideswiped the semi truck both times anyway (my performance was typical of the parents).  When we finished and I was heading to the parking area, the instructor flagged me down; I needed to back up to release the cone I was dragging away with me! 

The kids got their diplomas and we were finished.  My daughter really enjoyed this clinic and thinks that it was very useful.  I do too.  Now she knows what to expect when she slams on the brakes – how to turn at the same time, how much distance it can take to stop, and where to be looking (once you see the obstacle, you are supposed to look for an escape route – if you keep looking at the obstacle, you are sure to hit it).  She knows she can slam on the brakes on wet pavement, and that it will take longer to stop.  She knows she has to really crank the steering wheel in an emergency avoidance maneuver.  She also has a better idea of the dimensions of our car and how to get it through tight spaces.  Now, we are supposed to find a parking lot and practice these exercises (along with a couple more) on our own.  I’m volunteering my husband for this duty!!  And my other daughter is taking her driver’s permit test this month – I’m going to have two teenagers learning to drive!

The clinic cost $179 – I reminded myself that of everything we concentrate on in our children’s education, none of it is as important, and potentially life-saving, as keeping them safe on the road!  This is a miniscule investment when it comes to that.  You’ll want your teenagers’ friends to take this course too if your teenager is ever going to be in a car with them!

April 10, 2011

Hanauma Bay

Filed under: Science and MathEngimama @ 7:22 am

We made sure to get an early start for a visit to the Hanauma Bay Nature Preserve in the remnant of a volcanic crater on the island of Oahu.  I read that you need to arrive early, before the parking lot is full (and people are turned away).  We did beat most of the crowds.  Things have changed since my husband and I visited here in 1993.  In 1998, the city began charging admission and parking fees in order to reduce the number of visitors, and they prohibited feeding the fish.  In 2002, they opened an education center and instituted a mandatory video for visitors (about preservation, conservation, and safety).  They also began closing the bay on Tuesdays (except to President Obama who has gone snorkeling with his family here on Tuesdays during his Christmas Break vacations).  It was not too crowded yet when we arrived around 8:30 am, so we didn’t have to wait long for our turn in the movie theater.  While we waited we looked at the interesting exhibits in the Marine Education Center.  After watching the movie we walked down the steep trail rather than waiting for the tram.  We brought a couple of masks on the trip and friends gave the kids disposable underwater cameras.  We also rented a couple of fin, mask, and snorkel sets in case the kids decided to try them.  The girls did use the fins and masks and had a great time taking pictures.  They did not want to use the rental snorkels (that had been used by other people!).  My son (who previously said he did not want to go in “fish infested waters”) did get out by the coral reefs, but mostly he just looked at the fish from above (and rode around on my husband’s back for a while).  He didn’t like the fins and it was extremely painful to walk out there in the “sandy” areas which were actually full of rocks.  (We had not brought water shoes; my husband and I actually ended up wearing our leather sandals in the water.)  It was cloudy and a little rainy that day so it was cold in the strong breeze.  My poor younger daughter was shivering, but this was still one of her favorite parts of our entire Hawaiian vacation!  She loved looking at the fish and coral, and she is the only one of us who saw an eel (she got a couple of good photos of it too).  I told everyone to wear a t-shirt in the water to avoid “snorkelers sunburn” on the back even when it’s cloudy.  My husband didn’t wear one and he kept telling the girls that they would be warmer if they took the big t-shirts off (they wouldn’t though).  He ended up with a bright red back!!

April 9, 2011

365 Posts

Filed under: MiscellaneousEngimama @ 7:27 am

A year ago I set a goal for myself which I have now met.  I went through my old family newsletters, comprising over a dozen years of homeschooling, and posted something to my blog every day for a year.  I love doing fun, educational things with my kids, and I love writing about what we have learned.  I have also posted on our current activities and will continue to do so, but not every day.  The fact that I have a 15-year-old who loves to cook dinner every night (without any help from me) has added to the free time I have to write/post.  Now, I will put more of that time toward other activities and only post about things that I think are particularly interesting or useful to other homeschoolers.  I do have a lot of things planned this year!

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