A foundational math lesson for kindergarteners to understand how teen numbers are composed of a group of ten and additional ones. Students will use ten frames and base ten blocks to 'build' numbers 11-19.

Students will use physical manipulatives and comparison language to determine which monster has more than or fewer than their friend. This lesson focuses on sets up to 20.

Students explore and practice multiple ways to represent numbers from 5 to 20, using visual models, symbolic notation, and linguistic forms to build deep number sense.

A lesson focused on developing one-to-one correspondence and cardinality by counting objects in circular configurations, specifically targeting the challenging 'teen' numbers 10-20.

A series of visually-rich activities for kindergarten students to master counting to 25 using touch-point numbers and sequencing exercises, specifically designed with visual supports for deaf learners.

A hands-on lesson focused on place value foundations, specifically the concept of composing a ten by trading 10 individual ones for 1 ten-rod using Unifix cubes.

Students practice adding two-digit numbers to one-digit numbers and multiples of ten, covering both regrouping and non-regrouping scenarios.

A focused assessment on skip counting by 2s within the range of 2-10. Students identify the missing number in a single sequence to demonstrate mastery of the pattern.

A primary math lesson focused on using a hundreds chart to solve two-digit addition problems, including those requiring regrouping by composing a ten. Students will learn to navigate the chart by jumping tens (moving down) and ones (moving right).

A 30-minute lesson teaching students how to use a 100's chart to add two-digit numbers, focusing on 2-digit + 1-digit with regrouping and 2-digit + multiples of 10. Students will learn the 'Jump and Slide' method for navigating the chart.

Vocabulary assessment for Unit 2 covering time, counting, and problem-solving strategies.

Students will master counting teen numbers (10-20) in both linear and array configurations, focusing on the '10 and some more' strategy. This lesson uses a high-energy space mission theme to engage Kindergarteners in writing and representing numbers.

Students find and solve math problems hidden inside plastic eggs, reinforcing addition and subtraction fluency up to 20.

A foundational lesson on number recognition through a creative butterfly coloring activity. Students identify numbers 1-5 to reveal a vibrantly colored monarch-style butterfly.

A bilingual (English/Simplified Chinese) lesson on partitioning shapes into equal shares (halves and fourths) for Level 1 ELL students. The lesson focuses on visual understanding and basic vocabulary like 'equal', 'half', and 'fourth'.

Transitions from visual ten-frames to writing equations through a hands-on cut-and-paste activity.