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Showing posts with label chemistry. Show all posts
Showing posts with label chemistry. Show all posts

One Big Fat Notebook Resource Books for Study Help

 

Disclosure: I was sent copies of these books in exchange for an honest review. All opinions are my own.

It is hard to believe the end of the school year is upon us. We have been lucky this year. Hazel's small private school has been open all year so she has been in person since the day after Labor Day. When I was a teacher this was the time of the year where we were trying to cram in what we had left to cover and then get the kids ready for finals. As a student I hated final exams. There was just so much to learn and remember for them. And if you struggled with some topic it was sure to show up on the final exam. Today I am going to share with you three books from a series of books that are perfect for helping kids in middle school and high school ace hard classes. I have already shared the geometry one with you (since you know I'm a sucker for math books). Then Hazel's fifth grade teacher shared that she was using some of the middle school books to prepare lessons for her on-line classes and she loves the books. (She left the school and is only teaching on-line now.) I decided to give the books another look. Today I am going to share the middle school book on computer science and the high school books on biology and chemistry. All three books are really well written and explain the topics in simple terms that kids will be able to understand. I'm really hoping they come out with a physics one so I can really learn physics after awful experiences with it in high school and college. 

Natural Dyeing Part 3

Ok, this is really from my second day of experimenting with dyes and techniques, but it is the third post since I already posted Day 1 and Day 3. On this day we did some experimenting. I tried to make the process easier and a bit more kid friendly. I made a crucial mistake though. I did not pre-soak in the mordant. My colors washed away much more and are not as deep as they could be.
Celery Leaves
We started with Hazel chopping some celery leaves. We were hoping to get some green yarn. Unfortunately, it did not seem to work for us. I don't know if the pre-soak would have affected it or not. Half way through the day I added baby spinach with more vinegar and water, but it still didn't do anything. I actually re-dyed this yarn on Day 3. My new method is to put the chopped vegetable, fruit, flower in the jar with the mordant and then add boiling water. This way I did not have to use the stove (I have an electric tea kettle) and Hazel could help more.
Purple Cabbage

The next experiment was really neat. I had read on Poppytalk (which I found through Pineterest) that using vinegar or salt with red cabbage gave different colors. (She does a neat table runner with natural dyed fabrics--I definitely want to try this at some point!) I wanted to try this. This is actually why I didn't pre-soak. I wasn't sure what to do with the salt at the time. Now I have found recipes on how to do it (on Pioneer Thinking). And the neat thing is I was telling a family I tutor for about the experiment and the student I work with said, "Oh, I know why. We just learned this in chemistry class." She was so excited to see a real life application of it. It has to do with the pH of red cabbage. For more information to use as a lesson or possible understand yourself check out this explanation on About.com (plus it is really a neat science experiment there).
Purple Cabbage 1) Salt Mordant 2) Vinegar Mordant
 Look at the different colors you can get with purple cabbage!! I was so amazed. (It might be worth it to try making the green with the ammonia as the mordant. I just don't know if it will work on wool.)
1) Purple Cabbage with Vinegar, 2) Purple Cabbage with Salt, 3) Celery Leaves/Spinach
Since I did not pre-soak with a mordant, I rinsed with a mordant or should I say post-soaked in a mordant. I do not recommend doing it this way. It is definitely worth taking the 20 minutes to pre-soak. Please learn from my mistake!!
Same order as picture above with original colored skein on top.
As you can see the celery leaves and spinach did not change the color for us. Oh, well. Day 3, I had more success with this skein. Hazel had asked to dye some blue, so I'm glad the purple cabbage and salt worked. Next time I will definitely pre-soak though!! My hopes is for a rainbow sweater for Hazel from all this great yarn! When we went back to Drumlin Farm this week I bought two more skeins. I may retry the red cabbage with pre-soaking and I may buy a good natural green dye since none of my experiments worked.

This is where I share...