Series: Focus on the Child
Solving a Part-Part-Whole Problem with Child 39
March 22, 2022
This child uses cubes to model a part-part-whole problem where the whole is unknown. He uses a counting all strategy. He counts out each part and then counts them altogether, starting from one. Focus on…
- Topic: Number Operations
- Age/Grade Level: Pre-K, Kindergarten
- Tags Child 39
Series: Focus on the Lesson November 27, 2021
Counting a Collection of 101 – How Did You Count Them?
Counting Collections is an activity rooted in sense-making and joy. It invites students to count a collection of objects, talk to a partner about how they counted and then draw/represent their collection on paper. In…
- Topic: Number Sense, Counting
- Age/Grade Level: Pre-K, Kindergarten, 1st Grade
Series: Focus on Play November 17, 2021
Quantity Cards for Subitizing
Quantity is a particular amount of something, expressed as a number. Quantity cards for young children can have pictures of small sets such as dots, finger patterns, or 5- or 10- frames. The ones we…
- Topic: Number Sense
- Age/Grade Level: Pre-K, Kindergarten
- Tags Subitizing, Play, Games, Family Math, En Español
Series: Focus on the Child May 19, 2021
Why Cardinality is the Goal of Counting
What is cardinality? And how is it related to counting? The common definition of cardinality states that it’s the understanding that the last number word said when counting tells how many in all.
- Topic: Sets, Number Sense, Counting
- Age/Grade Level: Pre-K, Kindergarten
- Tags Cardinality
Series: Book Ideas May 5, 2021
Early Childhood Data Collection Activities Are for the Birds
Children are naturally interested in birds, so springtime is the perfect opportunity for early childhood data collection activities. Here are some favorites, along with book recommendations.
- Topic: Data Analysis
- Age/Grade Level: Pre-K, Kindergarten, 1st Grade
- Tags Animals, Family Math, Birds, Kevin Henkes, Asia Citro, Susan Edwards Richmond
Series: Ideas at Work April 14, 2021
DIY Rekenrek Ideas for Home and School
To encourage teachers and other adults to use rekenreks, it's important to not only go over ways to use a rekenrek, but also we thought we would make sure everyone has opportunities to have them,…
- Topic: Number Sense, Counting
- Age/Grade Level: Pre-K, Kindergarten
- Tags Rekenrek, Subitizing
Series: Focus on the Lesson April 13, 2021
Rekenrek Chart for Voting in the Classroom
Looking for new rekenrek activity ideas? Try voting with a rekenrek chart. In this video, we see a rekenrek chart used to solve a dilemma common to early childhood classrooms: choosing between two favorite books…
- Topic: Number Sense, Data Analysis
- Age/Grade Level: Pre-K, Kindergarten, 1st Grade
- Tags Subitizing, Rekenrek
Series: Focus on the Lesson March 17, 2021
Making the Number Ten on a Rekenrek
A good sense of the number ten is critical for building young children’s reasoning strategies. Here we see kindergarteners making the number ten on a rekenrek, a tool with red and white beads in groups…
- Topic: Number Sense
- Age/Grade Level: Kindergarten, 1st Grade
- Tags Subitizing, Rekenrek
Series: About the Collaborative February 22, 2021
Denver Head Start Teachers Sustain Children’s Growth in Math
An ongoing professional development program with Denver Great Kids Head Start (DGKHS) shows the power of a multi-year partnership to build sustainable growth in math achievement for young children.
- Age/Grade Level: Pre-K, Kindergarten
Series: Ideas at Work January 26, 2021
3 Ways to See Mathematical Structure in Everyday Kitchen Math
Cooking with kids is a natural way to do math together. But we're not talking about turning meal preparation into a formal math lesson. Cooking together presents an opportunity that is more about noticing and…
- Topic: Pattern, Measurement
- Age/Grade Level: Pre-K, Kindergarten, 1st Grade, 2nd Grade, 3rd Grade
- Tags Family Math