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A juice stall mixes squash (fruit syrup) and water. Every glass tastes the same. What does the seller keep the same?

This track follows Part I, Chapter 7, Proportional Reasoning-1.

What you will learn

• Two questions — how much more, and how many times.
• What a ratio says — one class, two ratios.
• Bigger numbers — multiply both parts.
• Simplest form — match units, then cut down.
• Sharing — count the parts, then find each share.
• Two that match — multiply across.
• Value of one — divide, then multiply.
• Growing together — the same answer every row.
• Rates — a ratio with units.
• Scales — a paper length and a real one.

Every lesson has a lab. Move something and watch the ratio.

Need a quick recap?

• Fractions — equal fractions name one amount.
• HCF — the highest common factor: the highest number that divides both exactly.