แบบฝึกหัดขั้นสูง

For more than a century, physicists have worked to understand the forces shaping the universe. Gravity pulls matter together. But something else is pushing the universe apart — and it is winning. Astronomers call this mysterious force dark energy, and a landmark instrument has…

Mars has fascinated scientists for generations, but recent discoveries have pushed the question of Martian life closer to the center of scientific debate than ever before. NASA’s robotic explorers — the Curiosity and Perseverance rovers — have identified chemical and geological…

What’s Inside 5-paragraph article based on Harari’s thesis 10+ vocabulary words in context (isolated, diffusion, Columbian Exchange, imagined order, authenticity, convergence, ethnicity) 9 True/False comprehension questions 5 fill-in-the-blank with word bank 3 open-ended comprehension questions + 2 discussion prompts Full answer key included Key Historical Concepts Pre-1492 isolation — civilizations as “separate bubbles” The Columbian…

An advanced ESL reading worksheet exploring why humans consistently misjudge technological change — from AT&T’s Picturephone to the internet to AI. Covers linear thinking bias, exponential growth, and adaptability. Vocabulary, T/F, comprehension, and discussion questions. (Grades 6–9, CEFR B2–C1)

An advanced worksheet on Avogadro’s number, atmospheric diffusion, and the probability of sharing Caesar’s molecules in every breath. (Grades 6–9)

An advanced reading worksheet on phylogeny, DNA comparison, and evolution. Compares human DNA to fungi, bananas, and other species in surprising ways. (Grades 6–9)

An advanced reading worksheet on stellar nucleosynthesis and the chemistry of life. Explores element formation in dying stars and how they became part of you. (Grades 6–9)