We've been planning, conducting and drawing conclusions from our own extended investigation this week. After finding out that the enamel on our teeth is very similar to the shell of an egg, we watched a clip of a scientist testing the affect of different drinks on teeth and decided to do some investigating of our own.
We were really surprised by our results, after leaving the eggs in the 6 drinks for 28 hours. Vinegar completely dissolved the egg shell! Orange juice was really bad too (worse than coke!) and we have decided that only water and milk don't harm your enamel. We did have to bear in mind that we don't hold the drinks in our mouths for 28 hours - but we will all make sure we wash our teeth really well so none of them are left on our teeth.
Ask your child what the control egg was and why we had to use this!
This week in Science we've been looking at how water can exist in all 3 states of matter and in particular how water is evaporated into water vapour. So we decided to investigate whether temperature affects the rate of evaporation by doing some washing!!
Keeping it very scientific, we measured out 50ml of water and poured it onto each of 3 towels, which were exactly the same size. At the same time, these towels were hung on 3 washing lines situated in places chosen for the different temperatures of their position; the playground, the agora and the classroom.
By weighing the towels, dry, after the water was absorbed and then after they had had time to dry on the washing line, we could calculate the amount of water that had evaporated, and draw a conclusion about the affect of the temperature.
After going outside to find Newts for Mrs Wright, Oliver and Aiden discovered a strange material sticking out of the soil. A bit of muscle power later and some tugging revealed a strange and quite heavy sack. We decided to leave the newts to themselves and take our exciting discovery into the agora to explore the contents in the warm.
Inside we found an array of what appeared to be Roman artefacts. On closer inspection and after a bit of discussion, we decided that the artefacts included;
wax tablet for writing
Statue of Roman goddess
Amphora with dried dates (a kind of pot)
Gladiator stone carving
toga tunic and red sash
sponge on a stick (roman toilet paper!)
Map on cloth of Roman St Albans
Gladiator/Roman army greaves to protect arms and legs in battle
pottery child's spinning top which we thought might have been a food crusher!
As we'd accidentally become archaeologists, we decided that we needed to formally record our findings. Using an Artefact Catalogue sheet, we drew each item and then wrote whether we thought it was a genuine Roman artefact or not and why we thought this.
We're really excited to see what else we will be able to find out about the Romans Topic!
On Friday 20th October we all had a great day out to Duxford Air Museum. It was a blustery day with the threat of rain hanging in the air, but that didn't ruin our fun at all!
We were met at the entrance by Debbie from the Museum's Education Centre. She had sent a letter to the teachers in the Summer holidays asking if we would be able to produce some work about flying machines as they needed some to display in the museum. We've been working hard all half term, learning about the science behind flight, as well as designing and making our own flying machines. We then wrote an explanation text, with labelled diagram and included a photo of ourselves and our junk model machine to make the finished posters. Debbie was really impressed with our work and we had a little hand over ceremony underneath Concorde. Debbie is now going to put all our work up in the classrooms at Duxford for all the other visiting schools to admire. A very proud moment!
We then went to look at the stealth planes in Hangar 7 and saw the Bluebird that can not be detected by radar. We got to try on some World War 2 uniforms and literally walk underneath some amazing aircraft as they were suspended from the ceiling. One of the bombers even had a bomb shaped tally of all the bombs it has dropped. We counted 198!! The information written with the planes was exactly like our explanations texts and even had labelled diagrams.
After our much needed lunch, we set off to explore the science of flight in Hangar 1 and were able to complete experiments; making hot air balloons rise, flying simulators and trying to safely land a plane, testing out the affect of drag on the undercarriage of a plane and so much more. This was all hands on and helped us to consolidate our science and topic learning from this half term.
Finally we had a look on Concorde and walked up and through the fuselage. We were surprised by how small it was on board, but there were soo many dials, I'm not sure that even with all our fab knowledge, we'd be able to fly that plane!!
All in all, we had a great day out and the trip was a great way to end a fantastic topic. Thank you to Mr Shinn, Mrs Tasker and Mrs Newton for coming along with us for the day.
Taking Flight in Science
This afternoon (Monday 18th September) the Woodpeckers have been looking at the force of air resistance and flying helicopters in the classroom. After making the rotor blades and investigating the impact of both gravity and air resistance, as well as how the blades rotate, we then had to chose an element to change and investigate.
We could look at the impact of having blades of different sizes, the weight on the end of the blades and changing the size and length of the blades themselves.
We had great fun testing out our theories and seeing the affects of the changes. We'll now be able to report back our findings to each other and decide where we want to take our science learning next.