How Can I Easily Prepare Both Mathematics and Biology for IAT and NEST?

The IISER Aptitude Test (IAT) and the National Entrance Screening Test (NEST) are gateway exams for students aspiring to enter prestigious science institutions. Although these exams provide flexibility, they require proficiency in Physics, Chemistry, Mathematics and Biology. While this structure gives students options, it can also lead to fear and anxiety, especially for those from PCM or PCB backgrounds who may not have studied all these subjects in-depth. Therefore, learning how to manage the burden of an additional subject is crucial.

In this blog, we will discuss strategies to overcome this challenge, focusing on how to prepare effectively for the additional subject in IAT and NEST.

Understanding the IAT and NEST Exam Structure:

Both IAT and NEST exams include four subjects: Physics, Chemistry, Mathematics, and Biology. However, students are only required to focus on their strongest three sections. Nevertheless, many students opt to prepare for all four, hoping to maximise their scores. Understanding the format is essential for knowing how to prioritise subjects and reduce stress.

1. IISER Aptitude Test (IAT): This test comprises questions from all four subjects, allowing students to choose their preferred subjects. While students can focus on three subjects, attempting more sections offers the chance to score higher. However, it can add extra pressure.
2. National Entrance Screening Test (NEST): Similarly, NEST includes sections in Physics, Chemistry, Mathematics, and Biology. It only counts the best three sections for the final merit score, giving students flexibility. However students need to qualify for a sectional cut-off for each section. Although, the sectional cut-off for each section is not large and can be scored by solving 2-3 questions correctly for each section.

How to Prepare for Mathematics as a PCB Student:

For PCB students, preparing for Mathematics may seem overwhelming, especially since they may have left behind many mathematical concepts after the 10th grade. However, with strategic preparation, they can succeed:

1. Start with the Basics: Begin your preparation with SciAstra Books, which provide a strong foundation in essential topics such as Algebra, Trigonometry, and Coordinate Geometry. Moreover, these textbooks break down complex ideas into simple steps, making it easier for students to grasp concepts. 
2. Prioritise Important Chapters: Since mastering the entire Mathematics syllabus might feel like too much, prioritise the most important chapters. Topics like Trigonometry, Probability, and Calculus are heavily tested. Additionally, concentrating on these topics first will maximise your chances of performing well on the exam.​ But to understand which topics are needed and important, you need expert guidance. Hence, SciAstra courses offer the best mentorships and guidance, specifically for PCB students. Choose our Vikram 2.0 or Kalam Batch for IAT and NEST 2025.
3. Regular Practice is Essential: Mathematics requires consistent practice. Therefore, ensure that you solve previous years’ papers and mock tests regularly. By doing so, you improve your problem-solving speed and enhance your accuracy. Over time, your confidence in Mathematics will grow.​ Again, SciAstra courses can help you here. Our courses include regular mock tests and solved PYQs that can significantly boost your preparation, specifically if you are a PCB student.
4. Create Formula Sheets: Since Mathematics relies heavily on formulas, create formula sheets that you can review regularly. Focus on important formulas related to Algebra, Trigonometry, and Calculus. Additionally, keeping these sheets handy will enable you to memorise formulas faster.

How to Prepare for Biology as a PCM Student:

For PCM students, Biology often feels like an additional burden because it involves extensive memorisation and less problem-solving compared to Physics or Mathematics. However, by focusing on strategic learning, PCM students can excel in Biology as well.

1. Focus on SciAstra Books: SciAstra Biology books are the best starting point for PCM students. These books cover key concepts in Genetics, Human Physiology, and Plant Physiology in a simplified manner.
2. Make Use of Diagrams: Biology involves processes that are easier to remember through diagrams and flowcharts. For instance, creating visual aids for processes like Photosynthesis or Cell Division can help reinforce understanding. Moreover, reviewing these diagrams regularly will improve recall during the exam​.
3. Flashcards and Short Notes: Since Biology involves memorizing facts and processes, creating flashcards and short notes will help retain information better. Make flashcards for key definitions and short notes for important processes like Respiration and Circulation. Additionally, review these cards frequently to ensure the material stays fresh in your mind
4. Practice PYQs and Mock Tests: Regular practice using previous years’ question papers (PYQs) and mock tests will help you get familiar with the types of questions asked in the exam. Mock tests also help with time management and strategy. Moreover, analysing your results will help you focus on areas that need improvement. Again, SciAstra courses are the best tools for PCM students to manage biology. These courses provide question banks and mock tests and provide special guidance in Biology for PCM students. If you are appearing for IAT or NEST 2026, choose the Homi 2026 batch.

Strategies for Managing the Stress of Additional Subjects:

1. Focus on Strengths: One effective way to manage the additional subject burden is to focus on your strongest subjects first. As the exams only require you to submit the best three sections, make sure you excel in those. Once you have a solid understanding of your primary subjects, you can dedicate time to the additional subject, ensuring you don’t feel overwhelmed​.
2. Time Management: Effective time management is key to reducing stress. Divide your time equally among your core subjects and the additional subject. Prioritize the areas where you need more practice, such as Mathematics for PCB students or Biology for PCM students. Additionally, ensure you allocate time for regular revision to keep your learning fresh​.
3. Break Up Your Study Sessions: Since long study sessions can lead to fatigue, break your study time into smaller chunks. Take short breaks between sessions to refresh your mind. This method ensures you stay productive and retain more information. Moreover, short bursts of focused study sessions are far more effective than long, uninterrupted periods of learning.
4. Use Online Resources: Leverage online resources such as SciAstra for access to high-quality content and practice materials. These platforms provide crash courses that simplify complex topics, allowing you to approach the subject with greater confidence. Additionally, these resources often offer mock tests, which simulate exam conditions and help you prepare more effectively​.

Conclusion:

While the additional subject burden in IAT and NEST can cause anxiety, it is entirely manageable with the right approach. By focusing on strengthening your basics, prioritizing key chapters, and using resources like SciAstra Books, practice papers, and SciAstra Courses, students can significantly improve their performance. Moreover, practicing regularly, managing time effectively, and taking short breaks will keep stress levels low and enhance productivity. Therefore, with determination and proper planning, you can confidently tackle the additional subject and boost your overall score.

FAQs:

1. How can I prepare for Mathematics as a PCB student?
   Start with NCERT books, and practice important topics like Trigonometry and Algebra. Regular practice with mock tests and previous years’ papers will also help you succeed.
2. How important are mock tests for preparation?
   Mock tests are crucial because they improve your time management skills, help you familiarize yourself with the exam pattern, and allow you to assess your preparation level.
3. Can PCM students do well in Biology for IAT?
   Yes, with proper preparation, PCM students can perform well in Biology. Focus on key chapters like Genetics and Human Physiology, and use diagrams and short notes for easy revision.

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