Science Challenges

Free, inquiry-based science challenges for primary school Years 3–6. Real experiments, real data, and real fun

Choose Your Challenge

Four challenges covering different strands of primary science. All free and curriculum-aligned

Adaptations Challenge

Years 5–6

Students investigate how living things adapt to survive, then design a fictional organism perfectly suited to a habitat of their choice

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Conservation Challenge

Years 3–6

Students become conservation biologists, investigating threatened Australian invertebrates and designing a plan to protect them

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Game Design Challenge

Years 3–6

Student teams design and pitch a mobile science game - learning systems thinking, creative design, and science communication

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New

Engineering Design Challenge

Years 3–6

Students work through the Engineering Design Process to solve a real problem - investigating, designing, building, and evaluating a solution

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Every Challenge Follows the Same Simple Formula

  1. Register

    Register for free below and you'll receive lesson plans and all teacher resources by email within minutes

  2. Teach

    Run digital lessons in class. Students work in teams of 3–5 through inquiry-based activities designed for collaborative learning

  3. Submit

    Teams submit their work online. Submission is always optional - participation is the goal, recognition is the bonus

Everything You Need Is Free

  • Lesson Plans
    Full plans for every lesson, with timing and teaching tips
  • Digital Lessons
    Browser-based, no student logins needed
  • Curriculum Links
    Mapped to ACARA and NSW Syllabus
  • Teacher Resources
    Submission guides, resource packs, and more
  • Assessment Criteria
    Shared criteria to guide and assess student work
  • Access to the Teacher Portal
    Easily select and share any challenge with your students for free

Here is what teachers and parents ask us

  • Do students need to create accounts?+
  • Who can participate?+
  • Is there a cost to participate?+
  • How do I get started with a challenge?+
  • How long does each challenge take?+
  • Is submission to the competition mandatory?+
  • Can I run more than one challenge at a time?+
  • Are challenges suitable for all primary year levels?+
  • Where are the challenges run - online or offline?+
  • What devices can I use with Arludo?+
  • Challenge Terms and Conditions+