Explore the Outdoors with our Spring Discovery Walk!

Take a walk outdoors this spring with ACER’s Spring Discovery Walk as your guide!  For our full Exploring the Outdoors collection, click here! Includes two new additions to our tree, shrub and flower activity suites: tulip and crab apple!


Reminder: Upcoming “Get Tech Savvy” Webinar!

Join us Sunday Feb. 25 from 1:30-2:30 PM for our “Get Tech Savvy” online webinar brought to you by our Seniors Measure UP Program. Sign up to learn some tips from an expert on how to use your Apple iPhone and iPad efficiently like a pro! All are welcome to attend.


ACER Newsletter – Fall/Winter 2023

We are happy to announce that our newsletter is back! 2023 was a very productive year for ACER, and also a year of celebration of ACER’s 35th anniversary! To look inside, check it out here!


Announcing our New Seniors Measure UP Webinar Series!

Join us this February and March for a special live webinar series designed especially for seniors as part of our Seniors Measure UP program, funded by the New Horizons for Seniors Program (Government of Canada). See below for details! All are welcome to attend. If you are interested please fill


A Tree Planted for Alice

After 35 years of planting trees with schools and communities across Ontario, ACER founder and President Alice Casselman was celebrated this past August with a maple tree planted in her honour at Mississauga’s Fleetwood Park. At the ceremony, Mississauga City Councillors Stephen Dasko (Ward 1) and Chris Fonseca (Ward 3)


The Do’s and Don’ts of Tree Mulching

November 2023 – Winter is fast approaching and replenishing the mulch around our trees ahead of winter is good practice,  to ensure its continuing benefits. Mulching adds nutrition to the soil, helps aerate it, regulates its temperature, holds in moisture, and suppresses weed growth. And, when added in the autumn,


ACER AGM 2023 – Livestream

AGM 2023 Livestream Find out more about ACER’s successes in 2022 and the exciting plans for 2023! Click below to view our live-streamed presentation that kicked-off the 2023 Annual General Meeting on Sunday June 11.


ACER Newsletter – Fall/Winter 2022

Well, we made it through another amazing year despite the persistence of COVID-19! Under the pandemic’s radar, ACER managed to plant P4C tree suites in three schoolyards; complete our federally funded Canadian Healthy Communities Initiative project in Mississauga and launch our newest Riparian Rangers initiative in the Ganaraska River watershed,


ACER Awarded Great Lakes Local Action Fund Grant – November 2022

November, 2022: ACER is excited to announce our latest Riparian Rangers initiative in the Ganaraska region funded by the Great Lakes Local Action Fund, kicked off on November 12 at the Sylvan Glen Conservation Area east of Toronto. During this one-year initiative ACER will take the lead working with the Ganaraska


Celebrating 1000 trees planted in Mississauga! Fleetwood Park, Oct. 15, 2022

On October 15, 2022, ACER celebrated 1000 trees planted in Mississauga Wards 1, 3 and 7, in collaboration with communities and the City of Mississauga, funded by the Canada Healthy Communities Initiative. Left to right in the photo:Chris Fonseca, Ward 3 CouncillorStephen Dasko, Ward 1 CouncillorAlice Casselman, ACER FounderLinda Casselman,



ABSOLUTELY BREATHTAKING! HOW IS THIS POSSIBLE? IN THE BEGINNING … there were green leaves ! What makes a leaf green? Chlorophyll, of course, but there are other colours hidden all year! Chlorophyll is PACKAGED in chloroplasts each cell in each green leaf!  See them in this magnified image. The leaves

December 2021 Newsletter

You can download the newsletter in PDF format here: From Our President – Alice Casselman It has been a challenging yet wonderful year! What we have accomplished, under Covid protocols, is really astonishing! Planting trees in Peel schoolyards and Mississauga parks, mulching and measuring in Bramalea, employing Canada Summer Jobs

Tree Planting in Mississauga 10/16/21

This Saturday 10/16 at 10 AM, ACER is hosting a tree planting event at Applewood Heights Park in Mississauga! We’ll provide the materials, and COVID safety protocols will be in effect. RSVP today! This event is made possible by the Canada Healthy Communities Initiative grant and our partner, the City


Ontario’s Own Heritage Red Oak

Written by ACER executive board member Elizabeth MacLean, with a tree planting guide by ACER founding president Alice Casselman. Ontario has its own celebrated oak tree. Known as the Heritage Red Oak, the giant tree stands near the edge of the Humber River, in the yard of a house on

Forge Ahead with

Written by ACER executive board member Elizabeth MacLean. “The sky’s the limit,” said Fazal Khan in an August on-line preview presentation of the website to ACER Board members and friends. He was describing the potential of both the website and its creators, a team of high-school and university students hired by

ACER AGM Presents Alumni and Reopens 2021

On June 13, just as COVID-19 restrictions reopened across Ontario ACER, the Association for Canadian Educational Resources, held its Annual General Meeting. The virtual meeting was simulcast on YouTube to a Canada-wide audience of members, Canada Summer Jobs interns, scientists and agency collaborators.  Video keynotes from two ACER interns who found career jobs

ACER Alumni: Tyler Orsulak

Part four of ACER’s Where Are They Now? series, a celebration of our wonderful former employees, interns, volunteers, and other folks who have made our work possible. Written by ACER executive board member Elizabeth MacLean. Tyler Orsulak’s career path is looking a little straighter now — diverse strands are weaving together

ACER Alumni: Julia Bilas

Part three of ACER’s Where Are They Now? series, a celebration of our wonderful former employees, interns, volunteers, and other folks who have made our work possible. Written by ACER executive board member Elizabeth MacLean. Julia Bilas says she always leaned toward the sciences — she grew up helping her mother

*Closed* We are Hiring Summer Interns

** Update: May 21, 2021 — Internship positions have now been filled. Thank you for your interest! ** ACER (Association for Canadian Educational Resources) is excited to open our application process for summer interns. Positions are available in the Region of Peel. ACER’s research and activities contribute to reaching UN

Spring Flowers: Maple Suite

With spring upon us, it’s the perfect time to explore our Spring Flowers activity suites! Start with our newest addition: the maple. Check out our activities for more ways to engage the outdoors.