Shared by Kuyen
Guest Blogger
Sunday, 24 December 2017
Friday, 15 December 2017
Sains Awal Kanak-Kanak
(Edisi Seminar Sains Prasekolah 2016)
Pada 7 Mei 2016 yang lalu, Seminar Sains Prasekolah telah diadakan buat pertama kali di Petrosains. Seramai 66 orang peserta yang terdiri daripada guru-guru prasekolah dan ibu bapa telah menyertai seminar ini.
Pelbagai pengisian telah dikongsi termasuklah sesi perkongsian bestari bertajuk ‘Nurturing the Young Children’ bersama Puan Carolyn Choo dari Kolej SEGI, Persembahan Tarian Tradisional yang dibawakan khas oleh kumpulan seni tari ASWARA, ceramah mengenai ‘Communicating with Young Children’ oleh Dr Romarzila Omar dari IPG Kampus Bangi, Playdates with SEGI students dan tentulah bengkel ‘Creative Science for Pre-schools’ oleh team Petrosains sendiri.
Kenapa Sains Awal untuk Kanak-kanak?
Terdapat pelbagai pendekatan yang boleh digunapakai untuk berkomunikasi dengan kanak-kanak seawal usia bayi hinggalah mereka mencapai usia 9 tahun (ada definisi yang mengatakan awal kanak-kanak berakhir pada usia yang lebih muda!)
Secara fitrah kanak-kanak mempunyai rasa ingin tahu yang kuat terhadap apa sahaja. Jadi komunikasi adalah instrumen penting untuk kita menggalakkan lagi rasa ingin tahu selain daripada memperkenalkan elemen lain seperti ‘hands-on’, pendekatan inkuiri serta kemahiran-kemahiran lain dalam pendidikan awal kanak-kanak.
3 Langkah sembang sains dengan kanak-kanak
Apabila kita merancang sesuatu aktiviti dengan si kecil, rangka soalan-soalan yang merangsang mereka berfikir dan mengarah kepada topik sains yang berkenaan. Kemudian mulakan proses penerokaan yang menyeronokkan itu!
Contoh Sembang Sains
Topik : Keperluan asas tumbuhan
Objektif teroka sains : Tumbuhan memerlukan air untuk hidup
Soalan-soalan yang diajukan bolehlah dipermudahkan dengan menggunakan bahasa perbualan yang bersesuaian. Contohnya, penggunaan perkataan “tumbuhan” kepada “pokok”. Selain daripada itu, anda akan dapati timbul soalan daripada kanak-kanak yang tidak boleh diteroka pada sesi yang telah dirancang. Jadikan ia sebagai “sesi teroka” yang lebih mendalam dan cuba cari sumber dari laman sesawang sebagai bahan bantu. Video pendek, buku bergambar dan lawatan ke pusat sains adalah antara pilihan yang baik!
Saya memilih untuk berkongsi sebahagian daripada intipati bengkel interaktif oleh Petrosains melalui blog ekoran daripada maklum balas peserta yang meminta kami berkongsi dengan lebih lanjut mengenai aktiviti yang dijalankan.
Antara aktiviti sains interaktif yang boleh dijalankan oleh guru dan sesiapa sahaja yang berminat dengan sains awal untuk kanak-kanak ialah [link] aktiviti Pasu Kreatif dan aktiviti Warna-warni Batik Ikat. Kedua-dua aktviti ini juga dijalankan oleh Komunikator Sains di Petrosains melalui program khas untuk murid prasekolah yang dikenali juga sebagai Creative Science for Pre-schools!
Shared by Izhana
Guest Blogger
Thursday, 30 November 2017
Friday, 17 November 2017
Thursday, 16 November 2017
Tuesday, 14 November 2017
Brush Your Teeth!
... and reduce the risk of heart attack!
We already knew that maintaining a high level of oral hygiene is good for your teeth.
But at Columbia University in America, they have discovered that brushing your teeth also helps reduce the risk of cardiovascular disease.
Researchers analysed
in
of 657
Also noted the thickness of
Carries blood from the
to the
The width of this artery is a good indication of arteriosclerosis when cholesterol or other substances nestle in the walls of the carotid artery.
When this happens, the blood flow can be affected and even stop.
So, did the researchers find a connection between oral hygiene and healthy arteries?
The more bacteria a gum infection creates, the thicker the carotid artery.
That means the increase in stroke or heart attack.
The researchers suspect that the bacteria travel through the body from the mouth via the blood and cause infections which close the arteries.
How to avoid this?
1. Good brushing
2. Flossing
References
Rik Kuiper and Tony Mudde. 2010. Summersdale Publishers Ltd.
https://www.webmd.com/heart/picture-of-the-carotid-artery
Shared by Norhidayah Alias
Guest Blogger
Researchers analysed
in
of 657
Also noted the thickness of
Carries blood from the
to the
The width of this artery is a good indication of arteriosclerosis when cholesterol or other substances nestle in the walls of the carotid artery.
When this happens, the blood flow can be affected and even stop.
So, did the researchers find a connection between oral hygiene and healthy arteries?
The more bacteria a gum infection creates, the thicker the carotid artery.
That means the increase in stroke or heart attack.
The researchers suspect that the bacteria travel through the body from the mouth via the blood and cause infections which close the arteries.
How to avoid this?
1. Good brushing
2. Flossing
References
Rik Kuiper and Tony Mudde. 2010. Summersdale Publishers Ltd.
https://www.webmd.com/heart/picture-of-the-carotid-artery
Shared by Norhidayah Alias
Guest Blogger
Friday, 3 November 2017
Are There Dinosaurs in Malaysia?
What are dinosaurs?
Dinosaurs are a diverse group of reptiles that lived from about 243 million years ago to 65 million years ago, during a time on earth we call the Mesozoic era. The clade Dinosauria consists of non-avian dinosaurs and avian (feathered)-dinosaurs that are birds that continued to exist past the K-T extinction event, but for this science fact, we will be referring to the non-avian dinosaurs only.
How do we know they existed?
Fossils of dinosaurs had been discovered around the globe, to an extent that a dinosaur discovery revolution started in the 70’s. In February 2014, a 145-75 m.y.o. spinosaurid tooth fossil was found in an undisclosed dig site in Pahang by a team of University Malaya and Japanese scientists.
Paleontology teams from UM, UKM, University Malaya Kelantan and Universiti Teknologi PETRONAS had discovered dinosaur tooth fossil of a dinosaur from the Ornithischian order, dinosaur tracks (of possible sauropods) and bone fossils from Sungai Cicir, Gunung Gagau and Tasik Kenyir in Terengganu.
Which period is significant in Malaysia?
Rocks from the Mesozoic era, which spanned 252 to 66 million years ago and cover the Triassic, Jurassic and Cretaceous periods are all available in Malaysia, though not in all states. It is easier to discover fossils from the Cretaceous periods because newer fossils are more well-preserved.
Why is This Science Important / Relevant to Us
The science of dinosaurs is a worldwide cultural phenomenon. It is a field of study that intrigues a lot of public interest towards certain sciences. Its popularity allowed the awareness of dinosaur sciences be raised among the public and can be used in movies, theme parks, museums and many other forms of public attractions and entertainment.
The study of dinosaurs helps us to understand the history of our planet earth: allowing us to predict the circumstances of future events on the planet in comparison to past events. This study allows us to understand living things in the present better. For example, the study of dinosaurs allows us to question the function of feathers on modern-day birds, because most feathered dinosaurs did not have their feathers functioned for flight. The study of dinosaurs also allows us to compare the magnitude of today’s extinctions (whereby every year some species of animals go extinct) with that of the dinosaurs’ since the dinosaurs were involved in the K-T extinction event.
Aside from that, a lot of fresh discoveries were carried out in untapped locations. For example, the some largest dinosaurs to ever walked the earth (such as Argentinosaurus) were uncovered in South America. Discoveries in India helped us understand the hazardous environmental conditions and natural disasters during the Cretaceous period. Madagascar’s discoveries helped us understand cannibalistic dinosaurs. Antarctica was where dinosaurs that could survive extreme cold were discovered. In China, dinosaurs with feathers were abundantly discovered. Who knows what kind of new discoveries we can get in Malaysia.
Dinosaur discovery in Malaysia is yet to be classified, therefore here are some pictures of dinosaurs from similar groups to get a rough idea what kinds of dinosaurs had been discovered in Malaysia.
Spinosaurid tooth found in Pahang in 2014.
Example of a fish-eating spinosaur: Suchomimus from Africa.
Ornithischian tooth found in Terengganu in late 2014.
Example of a plant-eating dinosaur from the Ornithischian order: Zalmoxes from Romania
(Possibly) Sauropod track fossil found in Terengganu in 2014.
Example of a plant-eating sauropod: Argentinosaurus from Argentina.
Map of Late Cretaceous (~66 mya).
Similar dinosaurs were distributed in the southern regions i.e. South America, Africa, Europe and Southeast Asia such as sauropods, spinosaurids, and abelisaurs. Ornithischians were widely distributed around the globe, though the crested hadrosaurs, thick-headed pachycephalosaurs, and ceratopsians were more commonly distributed around the northern regions i.e. China, Russia and North America, along with the famous tyrannosaurs.
Today, distribution in animal species can be seen around the globe, e.g. marsupials can only be found in Australia.
References
1. SBS News (2014, February 19): A team of Malaysian and Japanese paleontologists has found a darkened tooth fossil after a nearly two-year dig in the central state of Pahang. Retrieved from http://www.sbs.com.au/news/article/2014/02/19/first-malaysian-dinosaur-fossil-found
2. Dusty Drawers (2014, November 15): Dinosaur fossils from Terengganu. Retrieved from https://malayanoplia.wordpress.com/2014/11/15/dinosaur-fossils-from-terengganu/
Shared by Rizal Lai
Guest Blogger
Thursday, 2 November 2017
Friday, 20 October 2017
Wednesday, 11 October 2017
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