Answer:
Heart of stone: Cruel or stern nature
"My teacher has a heart of stone"
Walking Encyclopedia: Very knowledgeable about everything
"Joey is a walking encyclopedia"
Music to my ears: Exactly what you want to hear
"His voice is music to my ears"
Tall tree: Taller in height like a giant
"He is a tall tree"
Explanation:
Have a good day
-Illumi
Answer: Let's teach for mastery -- Not test Scores
Sal Khan shares his plan to turn struggling students into scholars by helping them master concepts at their own pace. He discusses the idea that many students don't enjoy topics like math because they never learned or mastered basic steps needed for more difficult equations.
Explanation: there you go hope this helps pleas give me brainliest
First person point of view
Shrew usually means an angered or a bad-tempered person.