Today’s talk was about Octopuses (Correct plural; Octopi is not technically incorrect though…)
At the bottom you’ll find our science project for the week. It is important for you all to make these as they shall be used in other experiments in the near future. Thanks =)

Even if you do not print and colour the picture, look at it with your children and discuss.
Here are some things to talk about with this picture:
“What animals are in the picture?” (Turtle, Oyster, Octopus, Starfish)
“How do you know that is a turtle and not a tortoise?” (Flat shell, Webbed feet like wings instead of short feet. It is in the water; tortoises stay on the land)
“Do you think any of those animals would eat each other?” (The turtle might eat the octopus. The Octopus might eat the oyster)
“Oh no! Do you think the octopus can escape if the turtle wants to eat him?”
“How can he escape? What would he do?” (He can squirt ink and dart away and maybe he can change colour to camouflage on a rock or in the sand)
“What other animals do you know about that use camouflage?” (Good examples include: Butterflies, Chameleons and army people.)
“How many arms and legs does an Octopus have?” (Two legs and six arms)
“Do you think an octopus is soft and smooth or hard and rough?”
“Can an octopus fit inside your water bottle?” (Yes.)
Remember these are not quiz questions. The children do not need to have known the answer nor do you need to teach them the answer. The objective is to have a conversation and inspire some curiosity. For the benefit of memory however, it would be a good idea to ask the questions a day later or bring it up in conversation randomly at times. This will very much exercise their skills of retrieving information, even if they don’t remember.
Additional:
It’s hard to appreciate how octopuses change colour with a photo so here is a video you can watch with your kids. (Click the word ‘video’ to go to the video)
If you have extra time, look for more pictures of octopuses with them on the computer or phone or tablet or thing-with-screen-and-internet.
Today’s project is the making of a pendulum. At Zenith, the kids could play with our pendulum for ages. It’s a good occupational toy and can be adapted into a one player game of catch.
Make a pendulum
A pendulum is simply a weight (called the bob) at the free end of a string or rod so it can swing from a pivot (where it is attached).
In the past pendulums were used in clocks to accurately measure time and has been exhaustively studied by scientists. Today we use electric, electronic or atomic tools to measure time.
For us a pendulum is a lot of fun!
Here is a simple way to make a pendulum that children can enjoy.
What you need:
- A bottle cap (eg Coke or Chubby or Solo or water bottle)
- A bottle that fits the cap (I recommend a few different ones for variety)
- A skewer or ice pick
- Some strong light string (light nylon can do, long enough to get the pendulum at child height)
- A beam or bar or hook where you can hang the pendulum
- A stove or lighter
- A small piece of foil or plastic
- Water or gravel or rice or sand (to weigh the bottle)
What to do:
- Heat the skewer or tip if the ice pick on a stove or with a candle or lighter
- Use the hot Skewer of ice pick to punch two holes in the bottle cap (through which string will be looped)
- Tie one end of string through these holes so that the string is knotted on top the bottle cap
- Fold the aluminium foil (or plastic) a few times and trim it to fit inside the bottle cap (this will be used to prevent water leaking out when the bottle is attached). You may trim after you have attached the bottle.
- Attach the other end of the string to the beam or hook or bar or tree trunk. This is where the pendulum will hang
- Attach any bottle of choice to the bottle cap after putting some water or gravel or rice into the bottle to give it some weight
Comments
Safety:
Teach your child that the bottle swings back and they should be prepared to catch it or block it or move out of the way, Or they should stand back when they propel it forward
Let children play with if it as they fell inclined. You can change the bottle, add coloured water, change the length of the string.
You may put up two different ones at the same time.
Later we may use these for science experiments.
