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Arithmetic Operations, Number Sense


K, 1st, 2nd




15 minutes

Regional Focus



Google Slides


This lesson plan is licensed under Creative Commons.

Creative Commons License

Backyard Math: Printable Bundle

Created By Teacher:
Last Updated:
Apr 18, 2024
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This bundle of printable math practice worksheets targets numeracy and operational skills including counting, comparing sets, addition, and subtraction. The pages are designed to be used alongside a study of nature, climate, and the world around us.
Accompanying Teaching Materials
Teaching Tips

  • Students can complete these worksheets as a whole class, in small groups, or as part of station work. 

  • There are a variety of skills represented to be able to meet the needs of learners. 

  • Encourage students to think about the natural world around them and what they might see, hear, and smell while walking through nature.

  • Some accompanying activities might include a nature walk, outdoor reading time, or a scent and sight scavenger hunt.

  • Some students may not have a safe outdoor space to explore. In these cases, explore the school grounds or participate in a virtual nature walk.

  • Encourage students to think of ways to take care of the natural world around them.

  • As an extension activity, students may write about how they can care for the natural world.

  • Students may color in the stars at the top of the page to demonstrate either how difficult they felt the work was, how they think they did, or how they feel about the content. Be sure to follow up with students about their responses.

Scientist Notes

This activity presents fundamental numeracy concepts to students. With additional materials that were properly cited, the activity focuses on how students may inventory the species and biodiversity richness in their surroundings.


Primary Standards

  • Common Core Math Standards (CCSS.MATH)
    • Counting & Cardinality (K)
      • CCSS.MATH.CONTENT.K.CC.B.4 Understand the relationship between numbers and quantities; connect counting to cardinality.
      • CCSS.MATH.CONTENT.K.CC.B.5 Count to answer "how many?" questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.
      • CCSS.MATH.CONTENT.K.CC.C.6 Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group, e.g., by using matching and counting strategies.
      • CCSS.MATH.CONTENT.K.CC.C.7 Compare two numbers between 1 and 10 presented as written numerals.
    • Operations & Algebraic Thinking (K-5)
      • CCSS.MATH.CONTENT.K.OA.A.1 Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
      • CCSS.MATH.CONTENT.K.OA.A.2 Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
      • CCSS.MATH.CONTENT.K.OA.A.3 Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
      • CCSS.MATH.CONTENT.K.OA.A.4 For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.
      • CCSS.MATH.CONTENT.K.OA.A.5 Fluently add and subtract within 5.
      • CCSS.MATH.CONTENT.1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
      • CCSS.MATH.CONTENT.1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
      • CCSS.MATH.CONTENT.1.OA.D.8 Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.
      • CCSS.MATH.CONTENT.2.OA.A.1 Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
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