Скачать или смотреть How to Solve “Difference Unchanged” Word Problems | Singapore Primary School Math Series

Struggling with Primary School Math word problems? In this video, we’ll show you how to master the “Difference Unchanged” strategy using bar models — a powerful visual method taught in Singapore Math.

🧠 Learn how to:
• Solve tricky age comparison questions
• Use the model method to find unknowns
• Understand why some differences stay the same over time
• Apply logical thinking in word problems

📚 Perfect for:
• Primary 5 & 6 students
• Parents supporting homework
• Tutors and educators looking for clear explanations

⏱️ What’s Covered:
00:00 - Aunt Lisa & her niece (4 times older problem)
03:04 - Mike & Dan age difference now and in future
08:26 - Balloons & ribbons quantity puzzle

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