Showing posts with label learning. Show all posts
Showing posts with label learning. Show all posts

Saturday, April 5, 2014

Science is Sweet - How to Make Cell Pie

We're studying cell structure in our 5th grade science section right now. Rather than simply drawing another diagram we decided it would be pretty sweet to make a pie that illustrates the parts in a simple animal/plant cell.


We didn't just glop stuff in there though, we studied the characteristics of the elements in the cell and tried to find ingredients with similar properties that would still be pretty tasty if mixed together in a pie.


Here's the list of ingredients we came up with:


Brodie might have a Mitochondrion in his mouth in this picture.


We added everything together and the results were pretty sweet! 


One tip, if you decide to try this at home, make sure the whipped cream is super stiff or all of the organelles will sink right in to the cytosol. If it's too soft, stick it in the freezer for a few minutes before you begin. 


In our homeschool nothing's handed to you, so here are some links if you want to find out more about the physical characteristics of all the parts of the cell. 
  1. Nucleolus – Cherry 
  2. Nucleus – Jello
  3. Ribosome – Sprinkles
  4. Vesicle – Jelly beans
  5. Endoplasmic Reticulum  
    1. Smooth – Hot Fudge
    2. Rough – Hot Fudge with Sprinkles
  6. Golgi Apparatus – Strawberry Jelly
  7. Cytoskeleton – Pirouline Cookies
  8. Mitochondrion – Candy Orange Slices
  9. Vacuole – Peanut M&M
  10. Cytoplasm (Cytosol)  –  Whipped Cream
  11. Lysosome – Gushers Fruit Snacks
  12. Centrosome – Twizzlers
  13. Cell Membrane – Graham Cracker Crust
Can you guess why we chose these ingredients? Would you have picked something different?  Let us know in the comments below!








Friday, March 14, 2014

Buildings' Bases a Homeschool Lesson with Legos

For our lesson today we wondered which base would support the biggest building. We used Legos to explore this idea. As a constant we only built on base patterns consisting of four dots. We learned these are called TETRIMINOS. In other words, shapes composed of four cubes connected orthogonally. 

Can you guess which one of our favorite video games was inspired by tetriminos? Find the answer here...


The first thing we had to do was find the Legos we would need to build our towers and LOTS of them since we figured they would be pretty tall. Big thanks to Bing for helping us find the bricks we needed. 


Next we started building. We tried to make our first tower on the table but found it too hard to reach the top after a certain point so we moved the experiment down to the floor. In order to figure out the height limitations, we stacked the bricks as high as possible until we couldn't balance it anymore and the tower fell over 3 times. 


Square Base: 105 Bricks Tall


Line Base: 72 Bricks Tall


Corner Base: 129 Bricks Tall


Z Shaped Base: 103 Bricks Tall


It took a lot of concentration not to knock the towers over just by adding more Legos.


There were moments when we had to hold our breath to make sure nothing shook.


It was totally worth the effort when we topped our previous record. (Even the minifigs were excited!)


Sometimes it was frustrating but we had to remember that the point of the experiment was to make the towers topple so we could record the data.

In the end our initial hypothesis was correct an the Corner Shaped Base made the tallest tower when we stacked it up against the competition. However, we learned there were other factors that might influence the outcome if the experiment was repeated. Things like; how often you switch the pattern of the bricks in the Corner and Z Shaped Bases can affect the integrity of the structure, it's easier to add lines in chunks rather than one at a time upon nearing the top of the tower, and when dogs walk by it almost always falls over. 

This was a really fun experiment and we encourage you to
please try this at home!


P.S. As an unintended side effect, we also learned about perspective in photography. This tetrimino is stacked on more than 100 bricks even though it appears to be on big Lego.

WOW!