DT Robot

For our DT project, we were required to make an animal/robot for a 1st-grade petting zoo! My partner Hina, and I made a bear. There wasn’t much reason why we chose a bear, but we thought id look cute. Our bear has 2 main features, which are shown above in my thinglink. Something about our bear is that it is 3 dimensional, and has all the features inside, between 2 pieces of cardboard.

Something I’m really proud of is how we were 1/2 people who managed to complete our robot on time. I really appreciated how we put effort into completing this project.

Something I would like to work on if I had more time is the detailing. I would definitely color/draw more details on the bear to make it look really finished.

Overall, I would definitely say that I’m really proud of this project and that this was a success, and I’m really happy with how everything turned out. The bear moved accordingly to plan, and it looked decently nice.


Polymers blog post#1

Science Blog Post on polymers!

By: Bessy Belay

Polymers are all around us, whether we like it or not! A polymer is a large chain molecule made up of repeated patterns of monomers。The Greek Prefix for “Poly” means many, and the suffix means “Parts”. In 1920, a German chemist that goes by the name Hermann Staudinger proposed the idea of polymers.

There are many different types of polymers, for example, “Biopolymer” or “Natural Polymer”, Synthetic polymer, thermoset plastics, or Thermoplastic polymers. There are major differences between the polymer’s listed above. For example, when we talk about natural polymer, some of the different types of polymers could be Silk, Wool, Amber, Keratin, DNA, Starch, etc.. But when it comes to synthetic polymers, some examples are Polystyrene, Synthetic rubber, silicone, etc… Synthetic Polymers are polymers that are prepared by a chemical reaction.

The process of creating synthetic polymers by combining many small monomer molecules into chains held together by covalent bonds is called polymerization! Polymerization can be split into 2 categories, Step-growth polymerization, and Chain-growth polymerization. The main difference between these two is that in a chain-growth polymerization process, monomer molecules are added to the chain one molecule at a time, whereas in step-growth polymerization, the monomers are bonded directly with one another.

If we take a closer look at the reactions happening while making the slime, The polyvinyl alcohol (PVA) can be made into slime by adding borax solution. This creates crosslinks between polymer chains. The more we add the borax solution onto the PVA, there will be more crosslinked molecules. The larger the polymeric material is made from the reaction. Causing the slime to become more solid.



What is a polymer? www.thoughtco.com/what-is-a-polymer-820536.

Polymers. pslc.ws/macrog/synth.htm.

Image of polymer. saylordotorg.github.io/