Reach for the Star

Non-calculator number and algebra · Optional extension

L104 · Allow 10–15 minutes for learners ready to move on. Answers are available after an attempt.

Stretch

Calculate 5/8−1/6 exactly and simplify.

Reveal a worked check after attempting

15/24−4/24=11/24.

Deep challenge

Solve 2(3x−1)=4x+10 without a calculator and check.

Reveal a worked check after attempting

6x−2=4x+10, x=6; both sides 34.

Recall & Review: feedback and extension integration

Lesson L104: Non-calculator number and algebra

Objective: Apply number and algebra methods without a calculator.

60-minute structure: 0-7 Connect & Check; 7-14 Share; 14-25 Present/model; 25-44 Apply route choice/practice; 44-52 independent exam-style check; 52-60 Recall & Review, WWW/EBI and next step.

What Went Well (WWW)

I selected an efficient numerical method, showed the key steps clearly and checked the sign, size or accuracy of my answer.

Even Better If (EBI)

I will make the place-value, sign or operation decision explicit and use estimation or an inverse calculation to check a fresh question.

Stretch and deep challenge

Stretch: Calculate 5/8−1/6 exactly and simplify.

Deep challenge: Solve 2(3x−1)=4x+10 without a calculator and check.