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Making Ten to Add & Subtract: A Live Workshop for K–2 Teachers
Algebra might sound advanced, but it fits right into our primary (K-2) classroom! At its core, algebra is about finding patterns and solving puzzles—skills that even our youngest learners can start developing. For example, you can use simple equations like “something + 3 = 5” and ask students what the “something” is. This helps them start thinking about missing pieces and how to solve for unknowns.
Everyday examples, like balancing objects on a scale or working with number sentences, show how algebra works. Today we’ll explore how incorporating fun, hands-on activities, like using blocks or drawing pictures, students can begin to understand basic algebra ideas without even realizing it. Starting small with these concepts helps build a strong foundation for math as they grow!
Research shows a strong link between understanding algebra and staying in school. In fact, a study from the US Department of Education (Schachter, 2013) found that 80% of high school dropouts said they left because they couldn’t pass Algebra I. That’s a staggering number and a big reminder of how crucial algebra is in a student’s path. When kids struggle with these concepts, it can lead to frustration, low confidence, and eventually, they start feeling left behind.
It’s so important to introduce these foundational ideas early on—even in our primary classrooms. By weaving algebraic thinking into simple, everyday lessons, we’re not just teaching math, we’re giving them tools to keep moving forward confidently in their education. Let’s make it count!
Additionally, algebra is often considered the gatekeeper for higher-level mathematics. By mastering algebraic thinking early, students are better prepared for advanced courses in mathematics and other STEM (Science, Technology, Engineering, and Mathematics) fields. This basic algebraic knowledge helps students move forward in school and gives them the skills to handle tougher subjects in middle and high school.
For teachers of Kindergarten through 2nd grade, the task of introducing algebraic thinking might seem daunting, *AND* it is both achievable and essential. At this early stage, the focus should be on laying the groundwork for algebra through activities that develop logical reasoning, pattern recognition, and problem-solving skills. (See examples here.) 
Even young children can begin to understand simple equations when they are framed in a context they understand. Using word problems and numberless word problems students can begin to consider unknown amounts. (See example tasks here.)
For example: “If you have 2 apples and I give you some more to make 5 apples, how many apples did I give you?” This kind of question helps students start to think about the concept of an unknown quantity (x + 2 = 5).
Algebraic thinking can be seamlessly integrated into daily math lessons. For example, as primary teachers we can introduce simple algebra. Instead of just solving problems like 2 + 3, students can solve something like x + 3 = 5 and figure out that x is 2. This way, they start learning about variables and how to balance equations early.
As we’ve explored in this blog post, concrete learning experiences in math matter. We should always help students move from the concrete, to the semi-concrete, and the abstract when exploring new math concepts. This shouldn’t stop for algebra! While we aren’t ready for algebra tiles just yet, using manipulatives such as blocks, counters, and beads helps young children grasp the concept of quantities and relationships between numbers. 
For instance, to introduce the concept of an unknown, teachers might ask students to figure out how many blocks are hidden in a box if they can see that the total number of blocks is 9 and they already have 3 outside the box.
Recognizing and creating patterns is a key precursor to algebraic thinking. Kindergarten through 2nd-grade teachers can encourage students to identify, extend, and create patterns using various objects like colored tiles, buttons, or drawings. Activities might include simple exercises like alternating colors (red, blue, red, blue) and asking what comes next, or more complex tasks like creating their own patterns and explaining the rule behind them. 
Encouraging a problem-solving approach to everyday tasks can nurture algebraic thinking. Ask questions that require students to think about different ways to solve a problem or find an answer. This might include simple word problems, puzzles, or questions like, “How many different ways can you make 10 using two numbers?” or pulling out your favorite number talk conversations.
Group activities and teamwork also boost algebra skills by letting students learn from one another. Collaborating on algebra problems promotes communication and lets them share different strategies and viewpoints. This group approach can deepen their understanding and interest in algebra.
Encouraging math discussions helps kids express their thought process and see various ways to solve problems. We can motivate students to explain how they reached an answer, creating a classroom where thinking is shared and explored. This not only improves understanding but also strengthens communication skills. (Read more about number talks here. And snag tasks for your Kindergarten, 1st Grade, and 2nd Grade classroom here.)
Teaching algebra in elementary school is incredibly important. It’s not just about math—it’s about giving students critical thinking skills that are key to their academic and career success. By introducing algebra early, we help students develop problem-solving, logical reasoning, and abstract thinking abilities that will benefit them throughout their lives.
By weaving algebra into the elementary curriculum in practical, engaging, and collaborative ways, we can help every student build a strong math foundation. This foundation not only sets them up for future success in math but also boosts their overall thinking skills, preparing them for various subjects and careers.
When we prioritize algebra in the early grades, we’re investing in our students’ futures, equipping them with the tools and confidence to excel both in school and beyond. As educators, it’s our duty to make algebra accessible, fun, and meaningful for all students, paving the way for lifelong learning and success.
Monthly Early Finisher Algebraic Tasks for 1st & 2nd Grade
FREE Introduction to Algebra Task Cards
Math Enrichment for Early Finishers (Nonseasonal)
Digital Number Talks (Kindergarten, 1st Grade, 2nd Grade)
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Join me for a hands-on workshop exploring what to model, which questions to ask, and how to respond when students get stuck using ten to add and subtract.
Includes a printable Teacher Toolkit, ready-to-use Number Talks, and the workshop recording.
