Thursday, March 31, 2011
Well, this is my first post ever, so I suppose I should start with AWESOME GLITTER TEXT!!!
Now how's THAT for a title! Yeah! ...
Anyway, back to the topic at hand. Asexual reproduction is where a living organisim reproduces by itself. But what is sexual reproduction? Well, I'd tell you, but I'd probably not be able to ever post again, so... you know...
GOOGLE IT!
Now, under normal circumstances, Animals 'can't' reproduce asexually, however, thanks to the amazing thing known as the KINGDOM OF LIFE, we don't need to worry about that anymore.
Plants (most of the time) Bacterium (excluding E. Coli and a few others) and Fungi ( all reproduce asexually. Their are (in real life) very few animals that reproduce asexually, but their are bound to be some, so let's dive right in... Take that however you want...
The Earthworm (Lumbricus terrestris), although SUPPOSED to reproduce sexually (I really don't know how), can actually produce asexually. In very specific circumstances. You see, and earthworm doesn't really have a brain, or a heart, or anything that resembles a normal creature. So when it's cut in two, if there's enough energy to keep both ends alive, it will grow into two sepertate worms. Isn't that awesome! The seastar (Asteroidia) also has a simillar process, where if one of it's arms is cut off, the arm can grow into another seastar.
Finally, I want to talk about an interesting animal called an Aphid (Aphioidea), which not only can produce both sexually and asexually, but... well, to understand it, you just need to watch this: Yeah, it got a little off the topic, but it was the most reliable video I could find. Now, I think I'm going to end my post here, because my hands are hurting and, well, I've already condensed a weeks worth of SCIENCE LESSONS into one post, so... HAPPY BLOGGING!
Now how's THAT for a title! Yeah! ...
Anyway, back to the topic at hand. Asexual reproduction is where a living organisim reproduces by itself. But what is sexual reproduction? Well, I'd tell you, but I'd probably not be able to ever post again, so... you know...
GOOGLE IT!
Now, under normal circumstances, Animals 'can't' reproduce asexually, however, thanks to the amazing thing known as the KINGDOM OF LIFE, we don't need to worry about that anymore.
Plants (most of the time) Bacterium (excluding E. Coli and a few others) and Fungi ( all reproduce asexually. Their are (in real life) very few animals that reproduce asexually, but their are bound to be some, so let's dive right in... Take that however you want...
The Earthworm (Lumbricus terrestris), although SUPPOSED to reproduce sexually (I really don't know how), can actually produce asexually. In very specific circumstances. You see, and earthworm doesn't really have a brain, or a heart, or anything that resembles a normal creature. So when it's cut in two, if there's enough energy to keep both ends alive, it will grow into two sepertate worms. Isn't that awesome! The seastar (Asteroidia) also has a simillar process, where if one of it's arms is cut off, the arm can grow into another seastar.
Finally, I want to talk about an interesting animal called an Aphid (Aphioidea), which not only can produce both sexually and asexually, but... well, to understand it, you just need to watch this: Yeah, it got a little off the topic, but it was the most reliable video I could find. Now, I think I'm going to end my post here, because my hands are hurting and, well, I've already condensed a weeks worth of SCIENCE LESSONS into one post, so... HAPPY BLOGGING!
Today we converted fraction decimals and percentages in our math books. first we ruled up a table with 3 colums and 5 rows( you can put as many rows as you want).Then jp7numeracy put one number in each row and then we had to convert those numbers to the emty boxs. The end product should look like this:
Fractions | Decimals | Percentages |
2/100 | 0.02 | 2% |
¾ | 0.75 | 75% |
2/3 | 0.66 | 66% |
125/1000 | 0.125 | 12 ½ % |
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Currently we are learning about asexual reproduction. As a general rule, animals cannot reproduce asexually. However, there are exceptions. Amoebas and other single-celled organisms reproduce asexually, being too small to have gender. Certain larger animals may reproduce asexually through either: parthenogenesis under certain circumstances (that is, reproduction via self-cloning), gynogenesis (via the catalyst of a male nearby which does not actually fertilize the eggs). Here is a video of bacteria reproducing asexually.
Currently we are learning about asexual reproduction. As a general rule, animals cannot reproduce asexually. However, there are exceptions. Amoebas and other single-celled organisms reproduce asexually, being too small to have gender. Certain larger animals may reproduce asexually through either: parthenogenesis under certain circumstances (that is, reproduction via self-cloning), gynogenesis (via the catalyst of a male nearby which does not actually fertilize the eggs). Here is a video of bacteria reproducing asexually.
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Today in maths we learnt all about decimals, percentages and fractions. We learnt how to convert decimals to fractions and percentages and vice verse. It was a heap of fun and everyone was asking lots of questions which helped me a lot.
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We have commenced a unit looking at reproduction. Our conversation commenced discussing asexual reproduction and moved to grafting fruit trees.
We viewed this clip which the class found very interesting.
Tuesday, March 29, 2011
Sample Science Test Question
Today we completed a Science Test based on the Digestive System and Nutrition.
Here is a question sample from the test:
Here is a question sample from the test:
Tuesday, March 22, 2011
Finding Energy in Food
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Hi guys! This week in Science we have been burning food. You may be wondering, why would be burning food? The answer is this: We are finding the energy in food. It was a pretty fun prac. I, BF, was in a group with RA, SN, and RB. We all took turns at burning the food. Here are the results:
Food | How easily did the food catch fire? | How big/intense a flame did it burn with? | How long did it burn for? |
Tiny Teddies | 5 seconds | Approx. 1cm | Approx. 1:02 min |
Chips | 4 seconds | Approx. 15 cm | Approx. 1:32 min |
Pasta | 6 seconds | Approx. 1 cm. | Approx. 32.3 sec. |
I thought the chips had the most fat because:
- It caught alight quickly
- The flame was huge
- It was alight for more than 1 minute
- And fat was dripping off in droves.
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Today we looked at adding and subtracting decimal fractions. Check out this link to assist:
Adding and Subtracting decimal fractions
Monday, March 14, 2011
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Today we looked at testing for Fat, Starch, Protein and Sugar in food. We did this by using a range of chemical tests.
To test for starch for example, we added two drops of iodine to a range of food samples. A blue/black reaction suggests starch is present.
Thursday, March 10, 2011
CHEMICALS!!!!!!!!!!
Today we tested food samples if they contained starch, sugar, protein and fat. We added chemicals such as Bluret Solution A and B and Benedict's solution to the food. We could tell what it contained by the colour of the food. For example, to find starch in food, you had to add iodine to the food and it would turn bluish-black if it had starch in it.
Tuesday, March 8, 2011
Monday, March 7, 2011
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