Checkpoint Science Past Papers 2010 Mark Scheme -

She grabbed her red pen and wrote a large, looping next to Eli's answer. Then she added a note in the margin: "Dominoes allowed. Excellent."

It was 10:17 PM, and Mrs. Nia Kabelo, a veteran science teacher at the dusty Chavakali Academy, was losing her war against a stack of papers.

"Tomorrow, remember: The exam has a key, but science has many doors. Open the one you know how to unlock. Sleep well." Checkpoint Science Past Papers 2010 Mark Scheme

She flipped to the back of the mark scheme. There, in faded gray ink, was the examiners' internal note: "Accept any clear description of particle vibration transfer. Do NOT accept 'heat flows' without mechanism."

Nia laughed out loud. Her cat, Kepler, looked up from the radiator. She grabbed her red pen and wrote a

Then she closed the mark scheme.

According to the mark scheme, this was zero. Zero points for anthropomorphic carpets. Zero for "grumble noise." Nia Kabelo, a veteran science teacher at the

Nia tapped her pen. Crash into wasn't collide . Did she dare?