Welcome to The Problem Solver Play Kit for months 43-45
Your 3-year-old loves to compare, organise, sort, and categorise—it’s their way of making sense of the world. When they were younger, they may have called all four-legged animals “dog” and anything circular “ball.” At age 3, their categorisations are getting more sophisticated, and they are likely beginning to notice differences in people.
Your child also may be starting to recognise numbers, patterns, sequences, and shapes. You can tell them that, just like stories and letters, maths and numbers are all around them. Before, they may have recited numbers in order without knowing what each one signified. Now, they are beginning to understand that each number represents a quantity that can be counted.
The playthings, books, and learning toys in The Problem Solver Play Kit support your 3-year-old’s desire to categorise, and the increasingly complex way they understand the world and their place in it. Use these educational tools to invite your child to measure, count, mix colours, learn about people, take turns, and more.
The Problem Solver is accompanied, as always, by our Play Guide. It contains all our research, some helpful tips to keep in mind as you navigate new changes, and more at-home activity ideas.
What’s Inside
The Problem Solver Play Kit

Turtle Hatch Game
Practise taking turns with a fun and collaborative board game.
Maths Bars & Number Tiles
Build maths fundamentals visually with concrete objects to count, line up, and compare.


Number Sense Nature Counters
Learn to count with 55 counters in 10 animal and nature characters.
Size It Up Measuring Tape
Made just for them with a soft pull tab, push bottom, and exposure to both cm and in.


Wooden Wobble Puzzle
Solve a STEM puzzle in three dimensions.
Liquid Colour Lab
Experiment with self-directed colour blending with 6 test tubes, 2 water droppers, a bamboo towel set, and plenty of color tablets.


‘Uncle Rob’s Pizza Party’ Book
A story featuring a loved one with a disability to help your child understand differences.
Get Started Guide
Visual instructions for the Montessori Maths Bars & Number Tiles and Number Sense Nature Counters for your independent 3-year-old.


Play Guide for Months 43, 44, 45
Ways to play, expert tips, development information, and at-home activity ideas during months 43, 44, and 45.
Posted in: 43 - 45 Months, Product Recommendations
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43 - 45 Months
Welcome to The Problem Solver Play Kit for months 43-45
Your 3-year-old loves to compare, organise, sort, and categorise—it’s their way of making sense of the world. When they were younger, they may have called all four-legged animals “dog” and anything circular “ball.” At age 3, their categorisations are getting more sophisticated, and they are likely beginning to notice differences in people. Your child also … Continued