Bruno and Pip’s Big Question – Understanding Mass Through Storytelling

Join Bruno the bear and Pip the squirrel on a fun science adventure as they explore why the seesaw tips and discover the concept of mass. This CuriousEd story brings real-world measurement and playful learning together for young learners.

1. BrunoandPip'sbigquestion
© 2025 CuriousEd.ai​

2. Learningobjective
2Gg.06Understandthatmassisthequantityofmatterinan
object.Estimateandmeasurefamiliarobjectsusingnon-
standardorstandardunits.
© 2025 CuriousEd.ai

3. © 2025 CuriousEd.ai​
Inasunnyforest,Brunothebearand
Pipthesquirrelplayedonaseesaw.
Bruno'ssidewaswaydownonthe
ground,andPip'ssidewashighupin
thesky.‘Wheel’chirpedPip.‘But
Bruno,whyamIalwaysuphere?’

4. © 2025 CuriousEd.ai​
Brunoscratchedhisbig,furryhead.
‘Hmm,’herumbled.‘It'sbecauseI
havemore'stuffinmethanyoudo.
It’scalledmass!Everythingismadeof
stuff,andmassishowwemeasure
howmuchstuffisinsomething.’

5. © 2025 CuriousEd.ai​
‘Morestuff?’squeakedPip,
scamperingdowntheseesawtolook
upathisfriend.‘So,youhavemore
massthanme.That'swhyyourside
goesdown!Butwhyisitimportantto
knowaboutmass?’

6. © 2025 CuriousEd.ai​
'Greatquestion!'saidBruno.'Imagine
we'rebakingaberrypie.Weneedto
knowhowmuchflourandsugarto
use.Ifwejustguess,thepiemightnot
tastegood!Measuringmasshelpsus
getitjustright.'

7. © 2025 CuriousEd.ai​
'Ooh,Ilovepie!'saidPip.'Sohowdo
wemeasurethismassstuff?'Bruno
pointedabigpaw.'Wecanusea
scale!Ascalehelpsuscomparethe
massofdifferentthingstoseewhich
hasmorestuff.'

8. © 2025 CuriousEd.ai​
Brunofoundalong,sturdybranch
andbalanceditonapointyrock.He
madehisownbalancescale!‘Let'stry
it!’hesaid.Heputabig,redappleon
onesideofthebranch,andthatside
tippedallthewaydown.

9. © 2025 CuriousEd.ai​
Pipscurriedupandputatinyacorn
ontheothersideofthebranch.The
applesidestayedway,waydown.
‘Wow!’Pipchirped.‘Theapplehas
muchmoremassthanmylittleacorn!’

10. © 2025 CuriousEd.ai​
'Exactly!'saidBruno.'Andweuse
specialwordstotalkaboutmass.For
littlethingswithasmallmass,likeyour
acornorapaperclip,weuseGRAMS.’

11. © 2025 CuriousEd.ai​
'Forbiggerthingswithalotofmass,
likemeorabigwatermelon,weuse
KILOGRAMS,'Brunoadded,patting
histummy.‘Onekilogramisthesame
as1,000grams.That'salotofgrams!'

12. © 2025 CuriousEd.ai​
PipzoomedupandsatonBruno'sbig
shoulder.'Igetit!'hesqueaked.‘You
haveamassofmanykilograms,and
myacornhasamassofafewgrams!
NowIunderstandwhyyou'retheking
oftheseesaw!'

13. © 2025 CuriousEd.ai​
Thankyou​