We believe every Singapore child deserves high-quality Science revision tools — completely free, no sign-up, no barriers.
Science is one of the most important subjects in Singapore's primary school curriculum — yet many families struggle to find high-quality, engaging revision resources that their children actually want to use.
We noticed that most revision apps are either too expensive, require subscriptions, or are simply not engaging enough to hold a child's attention. We wanted to change that.
ScienceStar was built specifically aligned to the 2026 MOE PSLE Science syllabus. Our goal is simple: make science revision fun, comprehensive, and accessible to every student — regardless of background or financial means.
Master of Science (Physics) · Published Researcher
ScienceStar was created by Nowsath Rifaya, a physics graduate with a Master's degree and a background in scientific research. Nowsath built this platform out of a genuine passion for science and a desire to make high-quality, accessible science education available to every child in Singapore — completely free.
With a deep understanding of scientific principles and how they are best communicated, Nowsath personally researched, wrote, and structured every topic, quiz, and study note on this site to be accurate, clear, and engaging for primary school learners.
Note: ScienceStar is an independent educational resource. The content is based on scientific expertise and thorough research of the MOE syllabus. Nowsath did not study under the Singapore MOE system, but has studied the curriculum extensively to ensure all content is accurate and fully aligned.
Chemical Capping Synthesis of Nickel Oxide Nanoparticles and their Characterisation Studies
Nowsath Rifaya M, Theivasanthi T, Alagar M
Nanoscience and Nanotechnology, 2012, Vol. 2(5), pp. 134–138
ScienceStar covers the full primary science journey — from the first time a P3 student learns about living things, all the way through to PSLE exam preparation.
ScienceStar is an independent educational resource and is not affiliated with, endorsed by, or connected to the Ministry of Education (MOE) Singapore or the Singapore Examinations and Assessment Board (SEAB).
While we work hard to ensure all content is accurate and aligned to the current PSLE Science syllabus, we recommend students also use their official school textbooks and materials. ScienceStar is intended to supplement, not replace, school-based learning.
If you spot any errors in our content or have suggestions for improvement, please reach out to us at hello@primayscience.org. We take content accuracy very seriously and will investigate and correct any issues promptly.
We love hearing from students, parents and teachers. Whether it's feedback, a content suggestion, or just to say hi — drop us a message!
In 2024, our son was preparing for his PSLE Science exam. He was a capable student — interested in science, not afraid of the work — but the revision materials we could find were mostly uninspiring. Expensive workbooks that listed facts without explaining them. Apps that looked colourful but asked the same surface-level recall questions you could get from a textbook. Tuition centres that cost more per month than some families spend on groceries. We thought: there has to be a better way.
So we built one — just a set of tools for our own child, built the way we thought they should be built. Quizzes that felt engaging. Notes that explained the reasoning, not just the facts. Model answers showing exactly what the marking scheme was looking for. He found it helpful. In October 2024 he sat his PSLE Science paper and scored AL1. We put the site online thinking a few families might find it useful. Hundreds of thousands of page views later, it seems quite a few families did.
Science is not a collection of facts to memorise. It is a way of making sense of the world — a set of explanations for why things happen, tested against evidence. When you understand why a gas has no fixed volume (its particles are moving too fast and too far apart to stay in one place), you do not need to memorise the property. It follows logically. When you understand why alveoli are tiny and numerous rather than one large air sac (surface area, diffusion speed, efficiency), the adaptation makes sense instead of needing to be committed to memory. This is the philosophy behind every piece of content on ScienceStar. We explain the reasoning, not just the result.
We are continuously expanding the Booklet B open-ended question practice — more worked examples with keyword annotations, more data interpretation scenarios, more fair test questions across a wider range of topics. We are also building out the P3 and P4 content more thoroughly, because strong foundations in those years make PSLE Science significantly more manageable, and right now most of the detailed content is weighted towards P5 and PSLE. If there is a topic you think is underserved or something about the site that could be better — please tell us. Email hello@primayscience.org. We read every message.