Mariela Santillana is a curriculum designer and the founder of Math Tech Connections. She is a former classroom teacher who is passionate about creating engaging, standards-aligned resources for grades 1–6.
Build Place Value Understanding with this 2nd Grade Interactive Google Slides Activity!Help your students master place value concepts with this interactive resource aligned to 2.NBT.1. Students will explore how hundreds, tens, and ones make up a three-digit number through hands-on digital activities. While working through these scaffolded slides, students will:✔️ Recognizing that three-digit numbers are made up of hundreds, tens, and ones ✔️ Grouping ones into tens and tens into hundreds using
Review 2nd Grade Skip Counting with our interactive Google Slides!While working through these interactive math slides, students will practice:✔️ Skip-counting by 5s, 10s, and 100s within 1,000 ✔️ Using place value reasoning to find missing numbers in sequences ✔️ Building fluency with number patterns through hands-on digital tasks With 26 slides of scaffolded practice, this resource is perfect for centers, review, or reinforcing 2nd grade skip-counting skills in an engaging, paperless way! ★ W
Review 3-Digit Number Forms with our interactive Google Slides!While working through these interactive place value slides, students will practice:✔️ Reading and writing three-digit numbers in standard, word, and expanded form ✔️ Using moveable pieces and the line tool to match different number forms ✔️ Typing numbers in text boxes to show understanding of each form With 26 slides of engaging practice, this resource is perfect for centers, review, or reinforcing 2nd grade number form skills thro
Review 2nd Grade Place Value with this interactive Google Slides bundle—perfect for test prep and math review!This digital resource covers key 2nd grade place value standards with 130+ clean, interactive slides designed to build number sense through hands-on digital practice. Students will explore digit values, skip counting patterns, number forms, comparisons, and rounding using visuals, number lines, and drag-and-drop tools. Each set is carefully structured to focus on one key concept at a ti
4th Grade Numbers Bundle – Interactive Google SlidesGive your students a complete, engaging review of key number concepts with this interactive Google Slides bundle! Aligned to 4th grade math standards, this bundle covers factors, multiples, prime and composite numbers, and number patterns with 110+ slides of visual, scaffolded, and hands-on digital practice. Each resource is carefully designed to support independent learning, small group instruction, and test prep through meaningful pattern-b
Review 2nd Grade Composing & Decomposing Numbers with this set of 9 engaging, cut & paste math sorting activities! Students build and break apart numbers using base-ten blocks, place value disks, and number forms to deepen their understanding of place value relationships. Interactive Google Slides are also included for digital practice! Use as morning work, math warm-ups, math centers, homework, or quick assessments to reinforce place value concepts. **Purchase the bundle & save!**Each Math
Review 2nd Grade Counting & Skip Counting with this set of 8 engaging, cut & paste math sorting activities!Students identify counting patterns, practice skip counting by 2s, 5s, and 10s, and use number lines to complete counting sequences. Interactive Google Slides are also included for digital practice! Use as morning work, math warm-ups, math centers, homework, or quick assessments to reinforce place value concepts. **Purchase the bundle & save!**Each Math Sort Includes: Printable Option (l
Review Comparing 3-Digit Numbers with Interactive Google Slides!Give your students meaningful practice with place value and number comparison using this hands-on digital resource. Students will:✔️ Comparing three-digit numbers using > , < , and = ✔️ Plotting numbers on number lines before comparing ✔️ Building numbers with place value disks and blocks✔️ Converting number forms (word, expanded, unit) to standard form to compare ✔️ Deciding if comparison statements are true or falseWith
Review 2nd Grade Read & Write 3-Digit Numbers with this set of 8 engaging, cut & paste math sorting activities! Each sort helps students connect standard, expanded, and word forms of numbers using visual models and place value understanding. Interactive Google Slides are also included for digital practice! Use as morning work, math warm-ups, math centers, homework, or quick assessments to reinforce place value concepts. **Purchase the bundle & save!**Each Math Sort Includes: Printable Option
Review 2nd Grade Rounding 2-Digit Numbers with this set of 7 engaging, cut & paste math sorting activities!Students practice rounding numbers to the nearest ten using number lines, midpoints, and benchmarks to visualize place value concepts. Interactive Google Slides are also included for digital practice! Use as morning work, math warm-ups, math centers, homework, or quick assessments to reinforce place value concepts. **Purchase the bundle & save!**Each Math Sort Includes: Printable Opti
Review 2nd Grade Operations with this interactive, standards-aligned Google Slides bundle—perfect for math skill review and test prep.This digital resource covers essential 2nd grade operations and algebraic thinking standards with 180+ clean, interactive slides that help students build fluency in addition and subtraction, solve real-world problems, and deepen their understanding of number patterns & repeated reasoning. Each set is carefully designed to focus on one concept at a time, usin
Review 2nd Grade Comparing and Ordering Numbers with this set of 8 engaging, cut & paste math sorting activities! Students use comparison symbols, different number forms, and benchmark numbers to determine value and order of 3-digit numbers. Interactive Google Slides are also included for digital practice! Use as morning work, math warm-ups, math centers, homework, or quick assessments to reinforce place value concepts. **Purchase the bundle & save!**Each Math Sort Includes: Printable Opti
Mariela Santillana is a curriculum designer and the founder of Math Tech Connections. She is a former classroom teacher who is passionate about creating engaging, standards-aligned resources for grades 1–6.
My own education history
Bachelor's in Elementary Education from the University of Central Florida
Additional biographical information
I was born in Mexico but have lived in the USA since I was two years old. According to my mom, I have always wanted to be teacher. I currently live in Florida with my husband, 3 kids, 3 dogs, and 1 rabbit.
We have a very blessed life :)
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