Catherine Castillo

Mother. Educator. 🌊 Lover. 🌲 Hugger. Creator. Advocate of joyful math. Ed.D. Sr. Implementation Specialist at IM. Tweets are my own.

[Catherine Castillo @MsCastillosMath]

I’m trying to build my social media presence for my art. Please follow me on Instagram @SunshineGirlArts !

[Illustrative Mathematics @IllustrateMath]

Exciting news! We’re partnering with @hand2mind to provide Interactive Center Kits & Manipulative Kits, bringing IM Certified® curricula to life! 🙌

✅ Minimal prep
✅ Hands-on practice
✅ Problem-based learning & fluency support

Read more: https://t.co/3bWbpEdxJA

#LearnWithIM

[Illustrative Mathematics @IllustrateMath]

🚨 It’s almost go time!
#LitMath2025 kicks off next week, and we are ready.

📍 Visit IM at BOOTH #107 to chat math, pick up free resources, and explore the power of problem-based learning.

We can’t wait to meet you in Chicago!
🔗 Learn more: https://t.co/sUFJwsQxs2

#IMxEvents

[Illustrative Mathematics @IllustrateMath]

📢 Integrated Math 1 in Spanish is now on AccessIM!

✅ Supports Spanish-speaking students
✅ Free, high-quality IM Certified® curriculum
✅ Anytime, anywhere access

👉 Visit https://t.co/NH2SKbvCVd to explore it now.
#MathEquity #BilingualEducation #AccessIM #LearnWithIM

[Illustrative Mathematics @IllustrateMath]

🗣️ What does it take to unlock meaningful student discourse in math class?

Our latest #IMxBlog post with @MsCastillosMath dives into how to create a classroom where students lead the conversation.

👉 Read it now: https://t.co/wac9qoZHSv
#LearnWithIM

[Illustrative Mathematics @IllustrateMath]

🎙️ What if math wasn’t about steps to memorize—but problems to make sense of?
In this Teaching That Counts podcast episode, April Mouton of IM shares how problem-based learning shifts the way students experience math. @maestasteach
🎧 Listen: https://t.co/FTbJtlpWGK
#LearnWithIM

[Illustrative Mathematics @IllustrateMath]

🧠 New on the #IMxBlog: “Unlocking the ‘Our’ in Discourse” gives practical strategies to build rich student discourse in math class through:
✅ Classroom norms
✅ Productive struggle
✅ Student agency
✅ Peer collaboration
👉 Read more: https://t.co/wac9qoZHSv

@MsCastillosMath

[Illustrative Mathematics @IllustrateMath]

What reasoning do you hope to hear from your students in the discussion?

What content could this warm-up activity help prepare students for?

Comment to let us know and then check out the lesson in the IM K–5 curriculum: https://t.co/C8ha7F6HQa

[Illustrative Mathematics @IllustrateMath]

🚨 IM® v.360 Integrated Math 2 & 3 are now available on AccessIM! 🎉

With this launch, the full 9–12 Integrated Pathway is complete—building on the strong foundation of Integrated Math 1.

Explore the full suite of IM v.360 courses: 👉 https://t.co/NH2SKbvCVd

#LearnWithIM

[Illustrative Mathematics @IllustrateMath]

🎉 Greenfield Elementary just adopted IM® K–5 Math districtwide!

Teacher Eric Saucier praised IM’s hands-on, engaging approach, while Principal Hilliard said the curriculum is making a measurable impact on student learning. 🙌

Read the full story here: https://t.co/3bWbpEdxJA

[Catherine Castillo @MsCastillosMath]

Loved getting to speak with these brilliant math leaders in Syracuse and Nashville and hear about their amazing IM implementation journeys!

[Illustrative Mathematics @IllustrateMath]

🎉 IM’s Exclusive Webinar Is Now Live! 🎉

Hear from district leaders & IM experts as they share insights on:

☑️ Problem-Based Instruction

☑️ Best Implementation Practices

☑️ Overcoming Adoption Challenges

Watch now on any device: https://t.co/YvxwEV4pqE.

#IMxWebinars

[Tom Loveless @tomloveless99]

Replacing Common Core with a different set of standards will solve very little. The United States cannot regulate its way to educational excellence. It’s time to invest resources in improving the basic science of education—including the discovery of new,

[Illustrative Mathematics @IllustrateMath]

Empower Your Coaching with IM Academy!

Join our Coaching Problem-Based Teaching & Learning sessions to gain practical strategies for supporting K–5 and 6–12 educators and students.

Sessions are filling up!

➡️ Register now to secure your spot: https://t.co/QDxC6Yw50v

[Catherine Castillo @MsCastillosMath]

@weaver2012 @DavidJHuber @IllustrateMath @EducateCT @SecCardona @MrsBaldwinning @KirkpatrickELD @weaver2012 I heard that and it broke my heart. Miss you!

[David Huber, Ed. D. @DavidJHuber]

Is this @IllustrateMath or organized chaos… or an amazing Grade1 math lesson during our 2nd in-school learning day of the year! Thanks #sssct staff and families for making today amazing for our kids. We are proud to be a #Title1 school @EducateCT @SecCardona

[Brad Weinstein @WeinsteinEdu]

Character counts! 🙌

[Illustrative Mathematics @IllustrateMath]

📣Exciting news for inclusive math education!

Learn how IM’s implementation supports are making a difference among students with disabilities. Be sure to check out our latest blog post!

📖 Read more on the #IMxBlog now: https://t.co/3YwqZbOj9Y

#LearnWithIM

[Catherine Castillo @MsCastillosMath]

I just published my dissertation findings in visual format on my blog for anyone interested in the findings. My research question was, “What teacher actions support successful facilitation of mathematical discourse?”

[Catherine Castillo @MsCastillosMath]

Teacher Actions That Support Mathematical Discourse  https://t.co/9HzILmN8sm via @MsCastillosMath

[Catherine Castillo @MsCastillosMath]

Teacher Actions That Support Mathematical Discourse  https://t.co/9HzILmN8sm via @MsCastillosMath

[Catherine Castillo @MsCastillosMath]

Thanks for the share @robertkaplinsky !

[Robert Kaplinsky @robertkaplinsky]

If you teach K-5, check out these 3-act tasks from @MsCastillosMath. Fun ideas to get kids making sense of math:
https://t.co/lSXgPFQbMe