The resource for Grade 1 focuses on building basic numeracy and spatial skills using nature-based examples.

• Mathematical Skills: Students learn to count, compare, and order numbers up to 99; solve single-step addition and subtraction; and identify basic 2D and 3D shapes. 
• Climate Integration: Exercises involve counting animals, plants, and cedar trees. Students practice ordering numbers by helping to clean a school playground of numbered plastic bottles.

Grade 2 introduces more complex operations and relates them directly to environmental challenges.

• Mathematical Skills: This level covers numbers up to 999, place value (hundreds, tens, and ones), and more advanced addition and subtraction word problems. 
• Climate Integration: Problems are framed around recycling efforts, such as calculating the total number of cans or plastic bottles collected by different students. It also introduces topics like the impact of synthetic pesticides on soil fertility.

Grade 3 emphasizes how small individual actions can lead to a larger positive impact when multiplied.

• Mathematical Skills: Key topics include doubling and tripling numbers, basic fractions, time duration, and identifying perpendicular lines.
  
• Climate Integration: Students calculate how many plastic bottles are saved if they double or triple their recycling efforts. They also learn about fractions through the variety of trees in a garden (fruit, shade, and flowering trees).