EXAMPLE 01A parent walkthrough
Simplify: log 1000
Show them: Ask: 10 to what power is 1000?
Say: 10³ = 1000
Say: Answer 3
FINAL ANSWER
3
MATH LEVEL L
Logarithms & Sequences — Level L Parent Guide
Last updated:
Logarithms, arithmetic and geometric sequences, and trigonometric ratios.
Grade 12 · approximate gradeTHE DEFINITION
What is Kumon Math Level L?
Kumon Math Level L (Logarithms & Sequences) is the 17th of 21 levels in the Kumon math program, where children learn logarithms, arithmetic and geometric sequences, and trigonometric ratios. It typically aligns with grade 12 schoolwork, though Kumon places children by ability rather than age, so the grade is a guide, not a rule.
Level L builds directly on Math Level K: Functions and prepares children for Math Level M: Trigonometry & Coordinate Geometry. It is one of 21 Kumon math levels covered in this independent parent guide series.
This is an independent parent guide, not an official curriculum or placement assessment. Topics and pace can vary; your child’s instructor can confirm their current work.
- Apply logarithm rules
- Find the nth term of sequences
- Use sin, cos, tan ratios
- Solve exponential equations
- Sum arithmetic and geometric series
How do I help my child with Level L?
Work through one example together, then let your child try the next one alone. A few small problems to try together — let your child attempt each first, then use these prompts when they need a nudge.
Original examples in Kumon style, written for parents — not scanned worksheets.
EXAMPLE 02A parent walkthrough
Find the 10th term of 3, 7, 11, 15, ...
Show them: Arithmetic sequence, difference d = 4
Say: Formula: a₁₀ = 3 + (10-1)×4
Say: = 3 + 36 = 39
FINAL ANSWER
39
How can parents support Level L?
Short, calm, and daily beats long and pressured. These small habits make Level L stick — pick one and start tonight.
Logs are just exponents in disguise — say it daily
SOH CAH TOA for trig ratios
Sequences: first check if the difference or ratio is constant
A LITTLE MORE CLARITY